Yes, in two or three places depending on the design used:
If additional stages (e.g. tertiary, quaternary,...) are present in the design, repeat numbers 2 and 3 for each additional stage to get all the places that fission is used.
They are the same kind of bomb: bombs that derive their energy from the atomic nucleus. It just depends on design and how much of the design yield is from fission or from fusion. Pure fission bombs cannot be built with yields above 1 megaton, but including some fusion the theoretical yield is unlimited.However considering mission, construction costs, size limits, etc. it is usually more practical to build low yield bombs that are part fission part fusion than to try to build high yield bombs of either type.The lowest yield nuclear bomb tested was the US Davy Crocket at 10 tons yield, the highest yield nuclear bomb tested was the USSR Tsar Bomba at 52 to 58 megatons yield (depending on method of measurement). Both were part fission part fusion designs, although the designs were obviously very different: the Davy Crocket was almost entirely fission yield, the Tsar Bomba was over 95% fusion yield and generated the least fallout per kiloton yield of any nuclear bomb detonated in the atmosphere.
Most Western Nations were surprised at how quickly the USSR was able to create their own fission (atomic) bomb. So instead of enjoying 5-10 years of atomic superiority, Western Countries were now looking at an unexpected threat. By pushing the development of the fusion (hydrogen) bomb, it was hoped that Western Countries could once again gain weapon superiority.
An atomic bomb codenamed "Little Boy" was dropped on Hiroshima at 8:15 AM on the 6th of August, 1945.
It is named for Italian-American scientist Enrico Fermi. (1901-1954). As part of the Manhattan Project to build the atomic bomb, Fermi led the group that achieved the world's first controlled, self-sustaining fission reaction on December 2, 1942, at the University of Chicago.
I think part of the answer is that the United States had some countries sign an agreement to not make, use,or even test old atomic bombs.
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They do. While the hydrogen bomb is generally regarded as a weapon that uses nuclear fusion, there is no such thing as a purely fusion-powered device. The fusion reaction is triggered by a fission device that forms part of the bomb.
Transmutation occurs when a fusion bomb (H-bomb) detonates: The Primary (A-bomb/fission) converts a heavy element like plutonium or uranium into lighter elements, such as strontium, etc... The Secondary (H-bomb/fusion part) converts a light element into heavier elements, like Hydrogen into Helium.
Fusion reaction combines isotopes of hydrogen to make helium and release energy. This requires temperatures in the millions of Kelvins to start.Fission reaction breaks up isotopes of heavy elements (Uranium & Plutonium) into lighter elements (fission fragments, a major part of fallout) and release energy. This can start a normal temperatures.
The original attomic bombs were fission weapons- heavy elements such as uranium and plutonium were fissioned (broken apart) into lighter elements, releasing energy. So called hydrogen bombs use fusion as part of their process. Very light elements, such as hydrogen, are fused (mashed together) and become heavier elements, releasing energy. You should note that fusion bombs usually use a fission weapon to start the nuclear reaction.
Nuclear bomb is a general term encompassing both fission (atomic) and fusion (hydrogen) bombs. Therefore, your question as worded cannot be answered. A fission bomb has a maximum yield that cannot be exceeded (estimated at about 1MTon). A fusion bomb has no maximum yield. In principle you can make one as big as you like. However, that being said there are fusion bombs with much lower yield than many fission bombs have! LLNL is detonating tiny fusion bombs, using a powerful laser to drive implosion and heat the fuel, having a yield of about one stick of dynamite each as part of research into making a controlled fusion power reactor.
Edward Teller is often referred to as the "Father of the Hydrogen Bomb" for his key role in its development as part of the Manhattan Project.
Deuterium is a stable isotope of hydrogen, with one proton and one neutron in its nucleus. It is used in the fusion stage of a hydrogen bomb to initiate the explosive chain reaction.
They are the same kind of bomb: bombs that derive their energy from the atomic nucleus. It just depends on design and how much of the design yield is from fission or from fusion. Pure fission bombs cannot be built with yields above 1 megaton, but including some fusion the theoretical yield is unlimited.However considering mission, construction costs, size limits, etc. it is usually more practical to build low yield bombs that are part fission part fusion than to try to build high yield bombs of either type.The lowest yield nuclear bomb tested was the US Davy Crocket at 10 tons yield, the highest yield nuclear bomb tested was the USSR Tsar Bomba at 52 to 58 megatons yield (depending on method of measurement). Both were part fission part fusion designs, although the designs were obviously very different: the Davy Crocket was almost entirely fission yield, the Tsar Bomba was over 95% fusion yield and generated the least fallout per kiloton yield of any nuclear bomb detonated in the atmosphere.
Atomic bombs are very complex weapons designed to force a rapid collapse of fissionable radioactive materials to force them into a critical state. They may have a "conventional bomb" built into them to force this to occur. The active part of the bomb will be very pure isotopes of either Uranium or Plutonium. Hydrogen bombs are more complicated, and use Hydrogen, Lithium, or Helium to generate the explosive power, but they essentially require the energy of a fission atomic bomb to start the secondary fusion reaction.
This was in Chicago in 1942, as part of the Manhattan Project to develop the A-bomb, and the chief scientist was Enrico Fermi.
Because the Sun is a million miles of hydrogen bomb explosion, while the Earth is just a 8,000 mile-wide rock. It's the "hydrogen bomb explosions" part that makes it a star.