WebNuclear fission is a reaction in which the nucleus of an atom splits into two or more smaller nuclei.The fission process often produces gamma photons, and releases a very large amount of energy even by the energetic standards of radioactive decay.. Nuclear fission of heavy elements was discovered on Monday 19 December 1938, by German chemist Otto …

WebA boosted fission weapon usually refers to a type of nuclear bomb that uses a small amount of fusion fuel to increase the rate, and thus yield, of a fission reaction. The neutrons released by the fusion reactions add to the neutrons released due to fission, allowing for more neutron-induced fission reactions to take place. The rate of fission is thereby …

WebGun-type fission weapons are fission-based nuclear weapons whose design assembles their fissile material into a supercritical mass by the use of the "gun" method: shooting one piece of sub-critical material into another. Although this is sometimes pictured as two sub-critical hemispheres driven together to make a supercritical sphere, typically a hollow …

WebNuclear weapon designs are physical, chemical, and engineering arrangements that cause the physics package of a nuclear weapon to detonate. There are three existing basic design types: pure fission weapons, the simplest and least technically demanding, were the first nuclear weapons built and have so far been the only type ever used in warfare (by the …

WebSpontaneous fission (SF) is a form of radioactive decay that is found only in very heavy chemical elements.The nuclear binding energy of the elements reaches its maximum at an atomic mass number of about 56 (e.g., iron-56); spontaneous breakdown into smaller nuclei and a few isolated nuclear particles becomes possible at greater atomic mass numbers.

WebThe Uranverein (English: "Uranium Club") or Uranprojekt (English: "Uranium Project") was the name given to the project in Germany to research nuclear technology, including nuclear weapons and nuclear reactors, during World War II.It went through several phases of work, but in the words of historian Mark Walker, it was ultimately "frozen at the laboratory level" …

WebA cobalt bomb is a type of "salted bomb": ... Initially, gamma radiation from the fission products of an equivalent size fission-fusion-fission bomb are much more intense than Co-60: 15,000 times more intense at 1 hour; 35 times more intense at 1 week; 5 times more intense at 1 month; and about equal at 6 months. Thereafter fission product ...

WebA thermonuclear weapon, bomb (H bomb) is a second-generation nuclear weapon design.Its greater sophistication affords it vastly greater destructive power than first-generation nuclear bombs, a more compact size, a lower mass, or a combination of these benefits.Characteristics of nuclear fusion reactions make possible the use of non-fissile …

WebCoordinates. The Tsar Bomba (Russian: Царь-бо́мба) (code name: Ivan or Vanya), also known by the alphanumerical designation "AN602", was a thermonuclear aerial bomb, and the most powerful nuclear weapon ever created and tested. Overall, the Soviet physicist Andrei Sakharov oversaw the project at Arzamas-16, while the main work of design was …

WebThe Einstein–Szilard letter was a letter written by Leo Szilard and signed by Albert Einstein that was sent to the United States President Franklin D. Roosevelt on August 2, 1939. Written by Szilard in consultation with fellow Hungarian physicists Edward Teller and Eugene Wigner, the letter warned that Germany might develop atomic bombs and …