Who first invented the nuclear bomb. Who really created the atomic bomb

The history of human development has always been accompanied by wars as a way to resolve conflicts through violence. Civilization has suffered more than fifteen thousand small and large armed conflicts, the loss of human lives is estimated in the millions. In the nineties of the last century alone, more than a hundred military clashes occurred, involving ninety countries of the world.

At the same time, scientific discoveries and technological progress made it possible to create weapons of destruction more power and sophistication of application. In the twentieth century Nuclear weapons became the peak of mass destructive impact and a political instrument.

Atomic bomb device

Modern nuclear bombs as means of destroying the enemy are created on the basis of advanced technical solutions, the essence of which is not widely publicized. But the main elements inherent in this type of weapon can be examined using the example of the design of a nuclear bomb codenamed “Fat Man,” dropped in 1945 on one of the cities of Japan.

The power of the explosion was 22.0 kt in TNT equivalent.

It had the following design features:

the length of the product was 3250.0 mm, with a diameter of the volumetric part - 1520.0 mm. Total weight more than 4.5 tons;
the body is elliptical in shape. To avoid premature destruction due to anti-aircraft ammunition and other unwanted impacts, 9.5 mm armored steel was used for its manufacture;
the body is divided into four internal parts: the nose, two halves of the ellipsoid (the main one is a compartment for the nuclear filling), and the tail.
the bow compartment is equipped with batteries;
the main compartment, like the nasal one, is vacuumized to prevent the entry of harmful environments, moisture, and to create comfortable conditions for the bearded man to work;
the ellipsoid housed a plutonium core surrounded by a uranium tamper (shell). It played the role of an inertial limiter for the course of the nuclear reaction, ensuring maximum activity of weapons-grade plutonium by reflecting neutrons to the side of the active zone of the charge.

A primary source of neutrons, called an initiator or “hedgehog,” was placed inside the nucleus. Represented by beryllium spherical in diameter 20.0 mm with polonium-based outer coating - 210.

It should be noted that the expert community has determined that this design of nuclear weapons is ineffective and unreliable in use. Neutron initiation of the uncontrolled type was not used further .

Operating principle

The process of fission of the nuclei of uranium 235 (233) and plutonium 239 (this is what a nuclear bomb is made of) with a huge release of energy while limiting the volume is called a nuclear explosion. The atomic structure of radioactive metals has an unstable form - they are constantly divided into other elements.

The process is accompanied by the detachment of neurons, some of which fall on neighboring atoms and initiate a further reaction, accompanied by the release of energy.

The principle is as follows: shortening the decay time leads to greater intensity of the process, and the concentration of neurons on bombarding the nuclei leads to chain reaction. When two elements are combined to a critical mass, a supercritical mass is created, leading to an explosion.

IN living conditions It is impossible to provoke an active reaction - high speeds of approach of the elements are needed - at least 2.5 km/s. Achieving this speed in a bomb is possible by using combining types of explosives (fast and slow), balancing the density of the supercritical mass producing an atomic explosion.

Nuclear explosions are attributed to the results of human activity on the planet or its orbit. Natural processes of this kind are possible only on some stars in outer space.

Atomic bombs are rightfully considered the most powerful and destructive weapons mass destruction. Tactical use solves the problem of destroying strategic, military targets on the ground, as well as deep-based ones, defeating a significant accumulation of enemy equipment and manpower.

It can be applied globally only with the goal of complete destruction of the population and infrastructure in large areas.

To achieve certain goals and perform tactical and strategic tasks, explosions of atomic weapons can be carried out by:

at critical and low altitudes (above and below 30.0 km);
in direct contact with the earth's crust (water);
underground (or underwater explosion).

A nuclear explosion is characterized by the instantaneous release of enormous energy.

Leading to damage to objects and people as follows:

Shock wave. In case of an explosion above or at earth's crust(water) is called an air wave, underground (water) - a seismic blast wave. An air wave is formed after critical compression of air masses and propagates in a circle until attenuation at a speed exceeding sound. Leads to both direct damage to manpower and indirect damage (interaction with fragments of destroyed objects). Action overpressure renders equipment non-functional by moving and hitting the ground;
Light radiation. The source is the light part formed by the evaporation of the product with air masses; for ground use, it is soil vapor. The effect occurs in the ultraviolet and infrared spectrum. Its absorption by objects and people provokes charring, melting and burning. The degree of damage depends on the distance of the epicenter;
Penetrating radiation- these are neutrons and gamma rays moving from the place of rupture. Exposure to biological tissue leads to ionization of cell molecules, leading to radiation sickness in the body. Damage to property is associated with fission reactions of molecules in the damaging elements of ammunition.
Radioactive contamination. During a ground explosion, soil vapors, dust, and other things rise. A cloud appears, moving in the direction of the movement of air masses. Sources of damage are represented by fission products of the active part of a nuclear weapon, isotopes, and undestroyed parts of the charge. When a radioactive cloud moves, continuous radiation contamination of the area occurs;
Electromagnetic pulse. The explosion is accompanied by the appearance of electromagnetic fields (from 1.0 to 1000 m) in the form of a pulse. They lead to failure electrical appliances, control and communication equipment.

Set of factors nuclear explosion inflicts varying levels of damage to enemy personnel, equipment and infrastructure, and the fatality of the consequences is associated only with the distance from its epicenter.

History of the creation of nuclear weapons

The creation of weapons using nuclear reactions was accompanied by a number of scientific discoveries, theoretical and practical research, including:

1905— the theory of relativity was created, which states that a small amount of matter corresponds to a significant release of energy according to the formula E = mc2, where “c” represents the speed of light (author A. Einstein);
1938— German scientists conducted an experiment on dividing an atom into parts by attacking uranium with neutrons, which ended successfully (O. Hann and F. Strassmann), and a physicist from Great Britain explained the fact of the release of energy (R. Frisch);
1939- scientists from France that when carrying out a chain of reactions of uranium molecules, energy will be released that can produce an explosion of enormous force (Joliot-Curie).

The latter was the starting point for the invention atomic weapons. Parallel development was carried out by Germany, Great Britain, the USA, and Japan. The main problem was the extraction of uranium in the required volumes for conducting experiments in this area.

The problem was solved faster in the USA by purchasing raw materials from Belgium in 1940.

As part of the project, called Manhattan, from 1939 to 1945, a uranium purification plant was built, a center for the study of nuclear processes was created, and people were recruited to work in it. the best specialists- physicists from all parts Western Europe.

Great Britain, which carried out its own developments, was forced, after the German bombing, to voluntarily transfer the developments on its project to the US military.

It is believed that the Americans were the first to invent atomic bomb. Tests of the first nuclear charge were carried out in the state of New Mexico in July 1945. The flash from the explosion darkened the sky and the sandy landscape turned to glass. After a short period of time, nuclear charges called “Baby” and “Fat Man” were created.

Nuclear weapons in the USSR - dates and events

The emergence of the USSR as a nuclear power was preceded by long work individual scientists and government institutions. Key periods and significant dates events are presented as follows:

1920 considered the beginning of the work of Soviet scientists on atomic fission;
Since the thirties the direction of nuclear physics becomes a priority;
October 1940— an initiative group of physicists came up with a proposal to use atomic developments for military purposes;
Summer 1941 in connection with the war institutions nuclear energy transferred to the rear;
Autumn 1941 year Soviet intelligence informed the country's leadership about the start of nuclear programs in Britain and America;
September 1942- atomic research began to be carried out in full, work on uranium continued;
February 1943— a special research laboratory was created under the leadership of I. Kurchatov, and general management was entrusted to V. Molotov;

The project was led by V. Molotov.

August 1945- in connection with the conduct of nuclear bombing in Japan, the high importance of developments for the USSR, a Special Committee was created under the leadership of L. Beria;
April 1946- KB-11 was created, which began to develop samples of Soviet nuclear weapons in two versions (using plutonium and uranium);
Mid 1948- work on uranium was stopped due to low efficiency at high costs;
August 1949— when the atomic bomb was invented in the USSR, the first Soviet nuclear bomb was tested.

The reduction in product development time was facilitated by the high-quality work of intelligence agencies, who were able to obtain information on American nuclear developments. Among those who first created the atomic bomb in the USSR was a team of scientists led by Academician A. Sakharov. They have developed more promising technical solutions than those used by the Americans.

Atomic bomb "RDS-1"

In 2015 - 2017, Russia made a breakthrough in improving nuclear weapons and their delivery systems, thereby declaring a state capable of repelling any aggression.

First atomic bomb tests

After testing an experimental nuclear bomb in New Mexico in the summer of 1945, the Japanese cities of Hiroshima and Nagasaki were bombed on August 6 and 9, respectively.

The development of the atomic bomb was completed this year

In 1949, under conditions of increased secrecy, Soviet designers of KB-11 and scientists completed the development of an atomic bomb called RDS-1 (jet engine “S”). On August 29, the first Soviet nuclear device was tested at the Semipalatinsk test site. The Russian atomic bomb - RDS-1 was a “drop-shaped” product, weighing 4.6 tons, with a volumetric diameter of 1.5 m, and a length of 3.7 meters.

The active part included a plutonium block, which made it possible to achieve an explosion power of 20.0 kilotons, commensurate with TNT. The testing site covered a radius of twenty kilometers. The specifics of the test detonation conditions have not been made public to date.

On September 3 of the same year, American aviation intelligence established the presence in the air masses of Kamchatka of traces of isotopes indicating the testing of a nuclear charge. On the twenty-third, the top US official publicly announced that the USSR had succeeded in testing an atomic bomb.

Soviet Union refuted the American statements with a TASS report, which spoke of large-scale construction on the territory of the USSR and large volumes of construction, including blasting, work, which caused the attention of foreigners. The official statement that the USSR had atomic weapons was made only in 1950. Therefore, there is still ongoing debate in the world about who was the first to invent the atomic bomb.

Third Reich Victoria Viktorovna Bulavina

Who invented the nuclear bomb?

The Nazi Party has always recognized great value technology and invested huge amounts of money in the development of missiles, aircraft and tanks. But the most outstanding and dangerous discovery was made in the field of nuclear physics. Germany was perhaps the leader in nuclear physics in the 1930s. However, with the Nazis coming to power, many German physicists who were Jews left the Third Reich. Some of them emigrated to the United States, bringing with them disturbing news: Germany may be working on an atomic bomb. This news prompted the Pentagon to take steps to develop its own atomic program, which was called the Manhattan Project...

An interesting, but more than dubious version of the “secret weapon of the Third Reich” was proposed by Hans Ulrich von Kranz. His book, The Secret Weapons of the Third Reich, puts forward the theory that the atomic bomb was created in Germany and that the United States only imitated the results of the Manhattan Project. But let's talk about this in more detail.

Otto Hahn, the famous German physicist and radiochemist, together with another prominent scientist Fritz Straussmann, discovered the fission of the uranium nucleus in 1938, essentially giving rise to work on the creation of nuclear weapons. In 1938, atomic developments were not classified, but in virtually no country except Germany, they were not given due attention. They didn't see much point. British Prime Minister Neville Chamberlain argued: “This abstract matter has nothing to do with state needs.” Professor Hahn assessed the state of nuclear research in the United States of America as follows: “If we talk about a country in which the least attention is paid to nuclear fission processes, then we should undoubtedly name the United States. Of course, I'm not considering Brazil or the Vatican right now. However, among developed countries, even Italy and communist Russia are significantly ahead of the United States.” He also noted that problems theoretical physics on the other side of the ocean, little attention is paid at all; priority is given to applied developments that can provide immediate profits. Hahn's verdict was unequivocal: “I can confidently say that within the next decade, North Americans will not be able to do anything significant for development atomic physics" This statement served as the basis for constructing the von Kranz hypothesis. Let's consider his version.

At the same time, the Alsos group was created, whose activities boiled down to “headhunting” and searching for the secrets of German atomic research. A logical question arises here: why should Americans look for other people’s secrets if their own project is underway? in full swing? Why did they rely so much on other people's research?

In the spring of 1945, thanks to the activities of Alsos, many scientists who took part in German nuclear research fell into the hands of the Americans. By May, they had Heisenberg, Hahn, Osenberg, Diebner, and many other outstanding German physicists. But the Alsos group continued active searches in already defeated Germany - until the very end of May. And only when all the major scientists were sent to America, Alsos ceased its activities. And at the end of June, the Americans test an atomic bomb, allegedly for the first time in the world. And at the beginning of August two bombs are dropped on Japanese cities. Hans Ulrich von Kranz noticed these coincidences.

The researcher also has doubts because only a month passed between the testing and combat use of the new superweapon, since manufacturing a nuclear bomb is impossible in such a short time! After Hiroshima and Nagasaki, the next US bombs did not enter service until 1947, preceded by additional tests in El Paso in 1946. This suggests that we are dealing with a carefully hidden truth, since it turns out that in 1945 the Americans dropped three bombs - and all were successful. The next tests - of the same bombs - take place a year and a half later, and not very successfully (three out of four bombs did not explode). Serial production began another six months later, and it is unknown to what extent the atomic bombs that appeared in American army warehouses corresponded to their terrible purpose. This led the researcher to the idea that “the first three atomic bombs - the same ones from 1945 - were not built by the Americans on their own, but received from someone. To put it bluntly - from the Germans. This hypothesis is indirectly confirmed by the reaction of German scientists to the bombing of Japanese cities, which we know about thanks to David Irving’s book.” According to the researcher, the atomic project of the Third Reich was controlled by the Ahnenerbe, which was under the personal subordination of SS leader Heinrich Himmler. According to Hans Ulrich von Kranz, “a nuclear charge is best tool post-war genocide, both Hitler and Himmler believed.” According to the researcher, on March 3, 1944, an atomic bomb (Object “Loki”) was delivered to the test site - in the swampy forests of Belarus. The tests were successful and aroused unprecedented enthusiasm among the leadership of the Third Reich. German propaganda had previously mentioned a “miracle weapon” of gigantic destructive power that the Wehrmacht would soon receive, but now these motives sounded even louder. They are usually considered a bluff, but can we definitely draw such a conclusion? As a rule, Nazi propaganda did not bluff, it only embellished reality. It has not yet been possible to convict her of a major lie on the issue of “miracle weapons.” Let us remember that propaganda promised jet fighters - the fastest in the world. And already at the end of 1944, hundreds of Messerschmitt-262s patrolled the airspace of the Reich. Propaganda promised a rain of missiles to the enemies, and since the fall of that year, dozens of V-cruise missiles rained down on the enemy every day. English cities. So why on earth should the promised super-destructive weapon be considered a bluff?

In the spring of 1944, feverish preparations began for the serial production of nuclear weapons. But why weren't these bombs used? Von Kranz gives this answer - there was no carrier, and when the Junkers-390 transport plane appeared, betrayal awaited the Reich, and besides, these bombs could no longer decide the outcome of the war...

How plausible is this version? Were the Germans really the first to develop the atomic bomb? It’s difficult to say, but this possibility should not be ruled out, because, as we know, it was German specialists who were leaders in atomic research back in the early 1940s.

Despite the fact that many historians are engaged in researching the secrets of the Third Reich, because many secret documents have become available, it seems that even today the archives with materials about German military developments reliably store many mysteries.

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The development of Soviet nuclear weapons began with the mining of radium samples in the early 1930s. In 1939, Soviet physicists Yuliy Khariton and Yakov Zeldovich calculated the chain reaction of fission of the nuclei of heavy atoms. The following year, scientists from the Ukrainian Institute of Physics and Technology submitted applications for the creation of an atomic bomb, as well as methods for producing uranium-235. For the first time, researchers have proposed using conventional explosives as a means to ignite the charge, which would create a critical mass and start a chain reaction.

However, the invention of the Kharkov physicists had its shortcomings, and therefore their application, having visited a variety of authorities, was ultimately rejected. The final word remained with the director of the Radium Institute of the USSR Academy of Sciences, Academician Vitaly Khlopin: “... the application has no real basis. Besides this, there is essentially a lot of fantastic stuff in it... Even if it were possible to implement a chain reaction, the energy that will be released would be better used to power engines, for example, airplanes.”

The appeals of scientists on the eve of the Great Patriotic War to the People's Commissar of Defense Sergei Timoshenko were also unsuccessful. As a result, the invention project was buried on a shelf labeled “top secret.”

Vladimir Semyonovich Spinel
Wikimedia Commons

In 1990, journalists asked one of the authors of the bomb project, Vladimir Spinel: “If your proposals in 1939-1940 were appreciated at the government level and you were given support, when would the USSR be able to have atomic weapons?”

“I think that with the capabilities that Igor Kurchatov later had, we would have received it in 1945,” Spinel replied.

However, it was Kurchatov who managed to use in his developments successful American schemes for creating a plutonium bomb, obtained by Soviet intelligence.

Atomic race

With the outbreak of the Great Patriotic War, nuclear research was temporarily stopped. The main scientific institutes of the two capitals were evacuated to remote regions.

The head of strategic intelligence, Lavrentiy Beria, was aware of the developments of Western physicists in the field of nuclear weapons. For the first time, the Soviet leadership learned about the possibility of creating a superweapon from the “father” of the American atomic bomb, Robert Oppenheimer, who visited the Soviet Union in September 1939. In the early 1940s, both politicians and scientists realized the reality of obtaining a nuclear bomb, and also that its appearance in the enemy's arsenal would jeopardize the security of other powers.

In 1941, the Soviet government received the first intelligence data from the USA and Great Britain, where active work on creating superweapons had already begun. The main informant was the Soviet “atomic spy” Klaus Fuchs, a physicist from Germany involved in work on the nuclear programs of the United States and Great Britain.

Academician of the USSR Academy of Sciences, physicist Pyotr Kapitsa
RIA Novosti
V. Noskov

Academician Pyotr Kapitsa, speaking on October 12, 1941 at an anti-fascist meeting of scientists, said: “One of the important means modern warfare are explosives. Science indicates fundamental possibilities increase the explosive force by 1.5-2 times... Theoretical calculations show that if a modern powerful bomb can, for example, destroy an entire block, then an atomic bomb of even a small size, if feasible, could easily destroy a large capital city with several million people. My personal opinion is that the technical difficulties standing in the way of using intra-atomic energy are still very great. This matter is still doubtful, but it is very likely that there are great opportunities here.”

In September 1942, the Soviet government adopted a decree “On the organization of work on uranium.” in spring next year Laboratory No. 2 of the USSR Academy of Sciences was created to produce the first Soviet bomb. Finally, on February 11, 1943, Stalin signed the GKO decision on the program of work to create an atomic bomb. At first, the deputy chairman of the State Defense Committee, Vyacheslav Molotov, was entrusted with leading the important task. It was he who had to find a scientific director for the new laboratory.

Molotov himself, in an entry dated July 9, 1971, recalls his decision as follows: “We have been working on this topic since 1943. I was instructed to answer for them, to find a person who could create the atomic bomb. The security officers gave me a list of reliable physicists that I could rely on, and I chose. He called Kapitsa, the academician, to his place. He said that we are not ready for this and that the atomic bomb is not a weapon of this war, but a matter of the future. They asked Joffe - he also had a somewhat unclear attitude towards this. In short, I had the youngest and still unknown Kurchatov, he was not allowed to move. I called him, we talked, he made a good impression on me. But he said he still has a lot of uncertainty. Then I decided to give him our intelligence materials - the intelligence officers had done a very important job. Kurchatov sat in the Kremlin for several days, with me, over these materials.”

Over the next couple of weeks, Kurchatov thoroughly studied the data received by intelligence and drew up an expert opinion: “The materials are of enormous, invaluable importance for our state and science... The totality of information indicates the technical possibility of solving the entire uranium problem in a much shorter time than our scientists think who are not familiar with the progress of work on this problem abroad.”

In mid-March, Igor Kurchatov took over as scientific director of Laboratory No. 2. In April 1946, for the needs of this laboratory, it was decided to create design bureau KB-11. The top-secret facility was located on the territory of the former Sarov Monastery, several tens of kilometers from Arzamas.

Igor Kurchatov (right) with a group of employees of the Leningrad Institute of Physics and Technology
RIA Novosti

KB-11 specialists were supposed to create an atomic bomb using plutonium as a working substance. At the same time, in the process of creating the first nuclear weapon in the USSR, domestic scientists relied on the designs of the US plutonium bomb, which was successfully tested in 1945. However, since the production of plutonium in the Soviet Union had not yet been carried out, physicists at the initial stage used uranium mined in Czechoslovak mines, as well as in the territories of East Germany, Kazakhstan and Kolyma.

The first Soviet atomic bomb was named RDS-1 ("Special Jet Engine"). A group of specialists led by Kurchatov managed to load a sufficient amount of uranium into it and start a chain reaction in the reactor on June 10, 1948. The next step was to use plutonium.

“This is atomic lightning”

In the plutonium "Fat Man", dropped on Nagasaki on August 9, 1945, American scientists placed 10 kilograms of radioactive metal. The USSR managed to accumulate this amount of substance by June 1949. The head of the experiment, Kurchatov, informed the curator of the atomic project, Lavrentiy Beria, about his readiness to test the RDS-1 on August 29.

A part of the Kazakh steppe with an area of about 20 kilometers was chosen as a testing ground. In its central part, specialists built a metal tower almost 40 meters high. It was on it that the RDS-1 was installed, the mass of which was 4.7 tons.

Soviet physicist Igor Golovin describes the situation at the test site a few minutes before the start of the tests: “Everything is fine. And suddenly, amid general silence, ten minutes before the “hour”, Beria’s voice is heard: “But nothing will work out for you, Igor Vasilyevich!” - “What are you talking about, Lavrenty Pavlovich! It will definitely work!” - Kurchatov exclaims and continues to watch, only his neck turned purple and his face became gloomily concentrated.

To a prominent scientist in the field of atomic law, Abram Ioyrysh, Kurchatov’s condition seems similar to a religious experience: “Kurchatov rushed out of the casemate, ran up the earthen rampart and shouting “She!” waved his arms widely, repeating: “She, she!” - and enlightenment spread across his face. The explosion column swirled and went into the stratosphere. A shock wave was approaching the command post, clearly visible on the grass. Kurchatov rushed towards her. Flerov rushed after him, grabbed him by the hand, forcibly dragged him into the casemate and closed the door.” The author of Kurchatov’s biography, Pyotr Astashenkov, gives his hero the following words: “This is atomic lightning. Now she is in our hands..."

Immediately after the explosion, the metal tower collapsed to the ground, and in its place only a crater remained. A powerful shock wave threw highway bridges a couple of tens of meters away, and nearby cars scattered across the open spaces almost 70 meters from the explosion site.

Nuclear mushroom of the RDS-1 ground explosion on August 29, 1949
Archive of RFNC-VNIIEF

One day, after another test, Kurchatov was asked: “Aren’t you worried about the moral side of this invention?”

“You asked a legitimate question,” he replied. “But I think it’s addressed incorrectly.” It is better to address it not to us, but to those who unleashed these forces... What is scary is not physics, but the adventurous game, not science, but its use by scoundrels... When science makes a breakthrough and opens up the possibility of actions affecting millions of people, the need arises rethink moral norms to bring these actions under control. But nothing like that happened. Quite the contrary. Just think about it - Churchill's speech in Fulton, military bases, bombers along our borders. The intentions are very clear. Science has been turned into a tool of blackmail and the main decisive factor in politics. Do you really think that morality will stop them? And if this is the case, and this is the case, you have to talk to them in their language. Yes, I know: the weapons we created are instruments of violence, but we were forced to create them in order to avoid more disgusting violence! — the answer of the scientist is described in the book “A-bomb” by Abram Ioyrysh and nuclear physicist Igor Morokhov.

A total of five RDS-1 bombs were manufactured. All of them were stored in closed city Arzamas-16. Now you can see a model of the bomb in the nuclear weapons museum in Sarov (formerly Arzamas-16).

Federal Agency for Education

TOMSK STATE UNIVERSITY OF CONTROL SYSTEMS AND RADIO ELECTRONICS (TUSUR)

Department of Radioelectronic Technologies and environmental monitoring(RETEM)

Coursework

In the discipline "TG and V"

Nuclear weapons: history of creation, design and damaging factors

Student gr.227

Tolmachev M.I.

Supervisor

Lecturer at the Department of Electronic Technologies and Electronics,

Khorev I.E.

Tomsk 2010

Coursework ___ pages, 11 pictures, 6 sources.

This course project covers key points in the history of the creation of nuclear weapons. The main types and characteristics of atomic projectiles are shown.

A classification of nuclear explosions is given. Various forms of energy release during an explosion are considered; types of its distribution and effects on humans.

The reactions occurring in the inner shells of nuclear projectiles have been studied. The damaging factors of nuclear explosions are described in detail.

Coursework completed in text editor Microsoft Word 2003

2.4 Damaging factors of a nuclear explosion

2.4.4 Radioactive contamination

3.1 Basic elements of nuclear weapons

3.3 Thermonuclear bomb design

Introduction

Structure electron shell was sufficiently studied by the end of the 19th century, but there was very little knowledge about the structure of the atomic nucleus, and besides, it was contradictory.

In 1896, a phenomenon called radioactivity (from the Latin word “radius” - ray) was discovered. This discovery played an important role in the further radiation of the structure atomic nuclei. Marie Skłodowska-Curie and Pierre

The Curies found that, in addition to uranium, there was also thorium, polonium and chemical compounds uranium with thorium has the same radiation as uranium.

Continuing their research, in 1898 they isolated from uranium ore a substance several million times more active than uranium, and called it radium, which means radiant. Substances that emit radiation like uranium or radium are called radioactive, and the phenomenon itself is called radioactivity.

In the 20th century, science took radical steps in the study of radioactivity and the application of the radioactive properties of materials.

Currently, 5 countries have nuclear weapons in their arsenal: the USA, Russia, Great Britain, France, China, and this list will be replenished in the coming years.

It is now difficult to assess the role of nuclear weapons. On the one hand, this is a powerful means of deterrence, on the other hand, it is the most effective tool for strengthening peace and preventing military conflicts between powers.

The tasks facing modern humanity are to prevent a nuclear arms race, after all. scientific knowledge can also serve humane, noble purposes.

1. History of the creation and development of nuclear weapons

In 1905, Albert Einstein published his special theory of relativity. According to this theory, the relationship between mass and energy is expressed by the equation E = mc 2, which means that a given mass (m) is associated with an amount of energy (E) equal to that mass times the square of the speed of light (c). A very small amount of matter is equivalent to a large amount of energy. For example, 1 kg of matter converted into energy would be equivalent to the energy released in the explosion of 22 megatons of TNT.

In 1938, as a result of experiments by German chemists Otto Hahn and Fritz Strassmann, they managed to split the uranium atom into two approximately equal parts by bombarding uranium with neutrons. British physicist Robert Frisch explained how energy is released when the nucleus of an atom splits.

At the beginning of 1939, the French physicist Joliot-Curie concluded that a chain reaction was possible that would lead to an explosion of monstrous destructive force and that uranium could become a source of energy, like an ordinary explosive.

This conclusion became the impetus for developments in the creation of nuclear weapons. Europe was on the eve of World War II, and the potential possession of such a powerful weapon encouraged its rapid creation, but the problem of having a large amount of uranium ore for large-scale research became a brake.

Physicists from Germany, England, the USA, and Japan worked on the creation of atomic weapons, realizing that without a sufficient amount of uranium ore it was impossible to carry out work. In September 1940, the United States purchased a large amount of the required ore using false documents from Belgium, which allowed them to carry out work on the creation of nuclear weapons in full swing.

nuclear weapon explosion shell

Before the outbreak of World War II, Albert Einstein wrote a letter to US President Franklin Roosevelt. It allegedly talked about Nazi Germany's attempts to purify Uranium-235, which could lead them to create an atomic bomb. It has now become known that German scientists were very far from carrying out a chain reaction. Their plans included making a “dirty”, highly radioactive bomb.

Be that as it may, the government of the United States made a decision - in as soon as possible create an atomic bomb. This project went down in history as the "Manhattan Project". Over the next six years, from 1939 to 1945, more than two billion dollars were spent on the Manhattan Project. A huge uranium purification plant was built in Oak Ridge, Tennessee. A purification method was proposed in which a gas centrifuge separated light Uranium-235 from heavier Uranium-238.

On the territory of the United States, in the desert expanses of New Mexico, an American nuclear center was created in 1942. Many scientists worked on the project, but the main one was Robert Oppenheimer. Under his leadership, the best minds of that time were gathered not only in the USA and England, but in almost all of Western Europe. A huge team worked on the creation of nuclear weapons, including 12 Nobel Prize laureates. Work in the laboratory did not stop for a minute.

In Europe, meanwhile, the Second World War was going on, and Germany carried out massive bombings of English cities, which endangered the English atomic project “Tub Alloys”, and England voluntarily transferred its developments and leading scientists of the project to the United States, which allowed the United States to take a leading position in the development of nuclear physics (creation of nuclear weapons).

On July 16, 1945, a bright flash lit up the sky over the plateau in the Jemez Mountains north of New Mexico. A distinctive mushroom-shaped cloud of radioactive dust rose 30,000 feet. All that remains at the explosion site are fragments of green radioactive glass, into which the sand has turned. This was the beginning of the atomic era.

By the summer of 1945, the Americans managed to assemble two atomic bombs, called “Baby” and “Fat Man”. The first bomb weighed 2,722 kg and was filled with enriched Uranium-235. “Fat Man” with a charge of Plutonium-239 with a power of more than 20 kt had a mass of 3175 kg.

On the morning of August 6, 1945, the Baby bomb was dropped over Hiroshima. On August 9, another bomb was dropped over the city of Nagasaki. The total loss of life and the scale of destruction from these bombings are characterized by the following figures: 300 thousand people died instantly from thermal radiation (temperature about 5000 degrees C) and the shock wave, another 200 thousand were injured, burned, or exposed to radiation. All buildings on an area of 12 sq. km were completely destroyed. These bombings shocked the whole world.

These 2 events are believed to have started the nuclear arms race.

But already in 1946, large deposits of higher quality uranium were discovered in the USSR and immediately began to be developed. A test site was built in the area of Semipalatinsk. And on August 29, 1949, the first Soviet nuclear device, codenamed RDS-1, was blown up at this test site. The event that took place at the Semipalatinsk test site informed the world about the creation of nuclear weapons in the USSR, which put an end to the American monopoly on the possession of weapons new to humanity.

2. Atomic weapons are weapons of mass destruction

2.1 Nuclear weapons

Nuclear or atomic weapons are explosive weapons based on the use of nuclear energy released during a nuclear chain reaction of the fission of heavy nuclei or a thermonuclear fusion reaction of light nuclei. Refers to weapons of mass destruction (WMD) along with biological and chemical ones.

A nuclear explosion is a process of instantaneous release of a large amount of intranuclear energy in a limited volume.

The center of a nuclear explosion is the point at which the flash occurs or the center of the fireball is located, and the epicenter is the projection of the center of the explosion onto the earth or water surface.

Nuclear weapons are the most powerful and dangerous type of weapon of mass destruction, threatening all of humanity with unprecedented destruction and the extermination of millions of people.

If an explosion occurs on the ground or quite close to its surface, then part of the explosion energy is transferred to the Earth's surface in the form of seismic vibrations. A phenomenon occurs that resembles an earthquake in its characteristics. As a result of such an explosion, seismic waves are formed, which propagate through the thickness of the earth over very long distances. The destructive effect of the wave is limited to a radius of several hundred meters.

As a result, it is extremely high temperature The explosion produces a bright flash of light, the intensity of which is hundreds of times greater than the intensity of the sun's rays falling on the Earth. When flashed, it stands out huge amount warmth and light. Light radiation causes spontaneous combustion of flammable materials and skin burns in people within a radius of many kilometers.

A democratic form of governance must be established in the USSR.
Vernadsky V.I.

The atomic bomb in the USSR was created on August 29, 1949 (the first successful launch). The project was led by academician Igor Vasilievich Kurchatov. The period of development of atomic weapons in the USSR lasted from 1942, and ended with testing on the territory of Kazakhstan. This broke the US monopoly on such weapons, because since 1945 they were the only nuclear power. The article is devoted to describing the history of the emergence of the Soviet nuclear bomb, as well as characterizing the consequences of these events for the USSR.

History of creation

In 1941, representatives of the USSR in New York conveyed information to Stalin that a meeting of physicists was being held in the United States, which was devoted to the development of nuclear weapons. Soviet scientists in the 1930s also worked on atomic research, the most famous being the splitting of the atom by scientists from Kharkov led by L. Landau. However, it never came to the point of actual use in weapons. In addition to the United States, Nazi Germany worked on this. At the end of 1941, the United States began its atomic project. Stalin learned about this at the beginning of 1942 and signed a decree on the creation of a laboratory in the USSR to create an atomic project; Academician I. Kurchatov became its leader.

There is an opinion that work US scientists accelerated the secret developments of German colleagues who came to America. In any case, in the summer of 1945 at the Potsdam Conference new president USA G. Truman informed Stalin about the completion of work on a new weapon - the atomic bomb. Moreover, to demonstrate the work of American scientists, the US government decided to test the new weapon in combat: on August 6 and 9, bombs were dropped on two Japanese cities, Hiroshima and Nagasaki. This was the first time that humanity learned about a new weapon. It was this event that forced Stalin to speed up the work of his scientists. I. Kurchatov was summoned by Stalin and promised to fulfill any demands of the scientist, as long as the process proceeded as quickly as possible. Moreover, a state committee was created under the Council of People's Commissars, which oversaw the Soviet atomic project. It was headed by L. Beria.

Development has moved to three centers:

The design bureau of the Kirov plant, working on the creation of special equipment.
A diffuse plant in the Urals, which was supposed to work on the creation of enriched uranium.
Chemical and metallurgical centers where plutonium was studied. It was this element that was used in the first Soviet-style nuclear bomb.

In 1946, the first Soviet unified nuclear center was created. It was a secret facility Arzamas-16, located in the city of Sarov (Nizhny Novgorod region). In 1947, the first nuclear reactor was created at an enterprise near Chelyabinsk. In 1948, a secret training ground was created on the territory of Kazakhstan, near the city of Semipalatinsk-21. It was here that on August 29, 1949, the first explosion of the Soviet atomic bomb RDS-1 was organized. This event was kept completely secret, but American Pacific aviation was able to record sharp increase radiation levels, which was evidence of testing a new weapon. Already in September 1949, G. Truman announced the presence of an atomic bomb in the USSR. Officially, the USSR admitted to the presence of these weapons only in 1950.

Several main consequences of the successful development of atomic weapons by Soviet scientists can be identified:

Loss of the US status as a single state with atomic weapons. This not only equalized the USSR with the USA in terms of military power, but also forced the latter to think through each of their military steps, since now they had to fear for the response of the USSR leadership.
The presence of atomic weapons in the USSR secured its status as a superpower.
After the USA and the USSR were equalized in the availability of atomic weapons, the race for their quantity began. States spent huge amounts of money to outdo their competitors. Moreover, attempts began to create even more powerful weapons.
These events marked the start of the nuclear race. Many countries have begun to invest resources to add to the list of nuclear weapons states and ensure their security.