Fat Man was a fission bomb, meaning that it relied on the splitting (fission) of heavy nuclei like uranium-235 to release energy.
Man has attempted to harness fusion for energy production through projects like ITER, which aims to demonstrate the viability of fusion as a clean and abundant energy source. Fusion research involves creating and controlling high-temperature plasma to initiate the fusion reaction, leading to the release of vast amounts of energy. While fusion has great potential, technical challenges remain in achieving sustained fusion reactions for practical energy production.
In stars it starts due to the great pressure at the star's center, which compresses the hydrogen and raises temperature to a condition where fusion commences. On Earth in man made equipment such as tokamaks, the pressure is much lower and the temperature has to be raised to hundreds of millions of degC to start fusion in a plasma of deuterium and tritium
Substances known as fuel, typically isotopes of hydrogen such as deuterium and tritium, are used in fusion reactions. These isotopes are heated to high temperatures to create plasma, where fusion occurs. Additionally, certain elements like lithium can be used as part of the fusion reactor design to enhance the reaction process.
Nuclear energy is made from the energy released during nuclear reactions, specifically the fission (splitting) or fusion (combining) of atomic nuclei. Fission is the process used in nuclear power plants where uranium or plutonium atoms are split, releasing a large amount of energy. Fusion is the process that powers the sun, where hydrogen atoms combine to form helium.
The standard hydrogen bomb is a Teller-Ulam design which utilizes a Fission-Fusion-Fission sequence. The primary is a fission device, likely boosted with tritium, not too different from the Fat Man implosion bomb used over Nagasaki; although it is much more efficient. The minimum critical mass for Pu-239 is about 25 pounds (11kg). The secondary is a fusion-fission device, utilizing the x-ray radiation from the primary to compress & heat a light element. At the center of this is a hollow tube of Pu-239. As the secondary compresses, the Pu-239 tube (aka "spark plug") compresses as well and achieves criticality giving a fission reaction. This may require another 25 pounds (~11kg) of Pu-239. So a rough estimate is about 50lbs (~22kg) for both fission processes. However, there are ways to create a super-critical mass using less material through the use of neutron reflectors, tritium boosting, neutron-initiators and other methods that are not common knowledge. Nations that possess nuclear weapons don't give precise details for reasons of national security, so an exact answer to your question would require a security clearance of some sort, and a need to know. So the best answer to your question is not much more than 50 pounds, or 11kg per weapon, probably a lot less.
On fission we have an atom splits into smaller parts. On fusion we have two or more atomic nuclei join together. In implosion-type we have objects are destroyed by collapsing on themselves. The little boy used fission using uranium and the fat man was an implosion-type device using plutonium.
Yes, the Fat Man bomb dropped on Nagasaki in 1945 contained plutonium as its fissile material. Plutonium-239 was used in the bomb's core, leading to a nuclear fission reaction that produced the explosion.
A nuclear disaster may occur when the radioactive materials are mishandled and which may lead to radioactive exposure or a chain reaction of nuclear fission, fusion. Most of these disasters are induced by the man made mistakes.
Fusion is harder to control/contain than fission. The Sun is fusion energy and we are 150 000 000 kilometers away, it is still dangerous to be exposed to that radiation for many consecutive hours. Inside the Earth, and many rocks, have ongoing fission and it is no trouble to live on the surface of this planet.
The first one to become successful in man made fusion will certainly be DT, but DD would be better if it could be made to work, as it would avoid the need to make tritium to feed as part of the fuel, and there are unlimited supplies of deuterium in the earth's waters. By "protium" I suppose you mean the proton-proton reaction as in the sun, this is impossible in man made fusion on earth, as it requires a huge volume and very high pressure as exists at the centre of the sun.
the "disappearance" of a small amount of mass. Most of the energy from nuclear fusion of deuterium and tritium, which is the most likely reaction to be harnessed by man, is given off as kinetic energy of the neutrons formed. This is one of the problems involved-how to make use of this energy, even when the plasma can be contained and made to fuse, which has only been achieved for brief bursts so far. The neutrons will have to be stopped in some material surrounding the plasma to produce heat, but what material will stand up to these conditions is not clear. In nuclear fission most of the energy appears first as kinetic energy of the fission fragments, which are then stopped in the fuel resulting in heat being generated which can be removed by the coolant, water or gas. There is also some gamma ray energy released.
The atomic bomb was a pure fission device, utilsing compression of a sub-critical uranium (Little Boy) (or plutonium: the Fat Man nuclear weapon) to cause an explosion.The H-bomb is a 'hybrid' device utilising a 'primary' charge that is effectivly an atomic bomb but a 'secondary' charge is also used, a container of hydrogen (deuterium and/or tritium) which undergoes fusion due to the heat/pressure/neutrons released by the primary.Atom: pure fissionH-bomb: fission/fusion hybrid
Little boy was a uranium fission bomb and Fat man was a plutonium implosion type bomb. Both required the needed research. There is no record into was harder to produce.
Man has attempted to harness fusion for energy production through projects like ITER, which aims to demonstrate the viability of fusion as a clean and abundant energy source. Fusion research involves creating and controlling high-temperature plasma to initiate the fusion reaction, leading to the release of vast amounts of energy. While fusion has great potential, technical challenges remain in achieving sustained fusion reactions for practical energy production.
My answer is the sun because if you get close to the sun you could admedentlly or quickly die!add. But as for Man made, then Atomic fission would be the most energetic reaction that we control.
The USA used the Little Boy, a gun-type uranium fission weapon and the Fat Man, a spherical implosion plutonium fission weapon against the Japanese cities of Hiroshima and Nagasaki, in that order, respectively.
In WWII the United States used only two Atomic Bombs agains Japan. The first bomb was a gun-type fission bomb known as "Little Boy". "Little Boy" was dropped on the Japanese city of Hiroshima. The second bomb was an implosion-type fission bomb known as "Fat Man". "Fat Man" was dropped on the Japanese city of Nagasaki.