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When does thermonuclear fusion reaction start?
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
How much plutonium is in a standard hydrogen bomb?
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.
How hot does a fusion reaction have to be?
The basic answer is that nuclear fusion can only occur at VERY high temperatures like MILLIONS of degrees. You can relate it to the sun where the sun is around 10mil degrees and bonds hydrogen atoms to form helium.
What substances are used to cause fusion?
For man made fusion the most likely ones are a mixture of deuterium and tritium
Why is the atomic bomb called Fat Man and Little Boy?
The difference was little boy was droped on Hiroshima in world war 2, it is much smaller than the fat man used on Nagasaki and the little boy uses uranium to compress it. The fat man uses plutonium to detonate.
Is fission or fusion the source of energy in the bombs dropped on hiroshima and nagasaki?
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.
Why is nuclear fusion more harmful than nuclear fission?
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.
How does a nuclear disaster occur?
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.
Which fusion reaction could possibly result in fusion being a viable source of energy dt reaction dd reaction or protium reaction?
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.
Whats the difference between an atom bomb and a hydrogen bomb?
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
What kind of energy is given off from a nuclear fusion reaction and from a nuclear fission reaction?
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.
Was it harder to make the Little Boy atomic bomb than the Fat Man atomic bomb?
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.
Is krypton man made?
Krypton is an element, and all elements are the result of nuclear fission, nuclear fusion or radioactive decay. Krypton is one of the byproducts of the nuclear fission of Uranium and Plutonium, either from atomic bombs or nuclear reactors. Since Krypton is not one of the results of a natural radioactive decay chain, the only other possible source of Krypton is from nuclear fusion, and the only source of fusion powerful enough to produce it would be a supernova.
What is the hottest man made object on earth?
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.
Which atomic weapons were used in World War 2?
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.
What Nuclear Weapons were used in World War II?
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.
How does Spider-Man disarm the bomb in Spider-Man 2?
In Spider-man 2 Doc Ock goes in the the water and carries the bomb to the depths saving the city plus sacrificing himself. It wasn't a bomb it was a fusion reaction.
