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The
fusion bomb |
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After the birth of the bomb to fission the soldiers understood
endured that this type of arm was much limited one, in how much could not themselves
be exceeded sure a quantitative one of fissibile material. Then the scenziati
ones thought well to use the opposite principle, that is the two more light atom
or fusion in one heavier.
Practically one finds of forehead to enormous difficulties due to us to the resistance
of the repulsive forces between loaded electrical workers with equal sign. In
order to gain such forces it is necessary to carry the matter to the state of
plasma by means of temperatures made out to ten million degrees. This fact determined
a large problem in how much to carry to temperature therefore elaevate hydrogen
isotopes shortly time turned out almost impossible. this is also the problem for
the use of this energy in civil use. In order to resolve this obstacle bomb to
fission disposed to one was believed to make to detonate one next hydrogen mass,
within a metallic cylinder of a special material.
The outbreak has beginning with the explosion of loads with TNT that succeeds
to blow up one sufficient amount of present U-235 on the front part of the device.
The freed neutrons and the high temperature make that the cylinder of Them and
deuterium (H-2) are entered to make part of the reaction. The lithium is transformed
in trizio (H-3) that, stirring itself with deuterium, door to the plasma formation.
These plasma particles are melted immediately in He-4 and free energy.
Later on the bomb was improved making it to become to three stages, fission, fusion,
fission. The principle are the same one of that mensionato before but it was believed
well to add an external layer of uranio-238, or of so that the freed fast neutrons
from the fusion of hydrogen go to fissionare those of the uranio-238 above all
increasing to the destructive force and the produced radioactive material from
the outbreak and rilasciato later on in the fullout. Or to the place of the uranio-238
it comes put a not radioactive cobalt covering 59. At the moment of the outbreak,
the neutrons expresses produced in the thermonuclear fusion bomb cobalt and come
captured giving to place to the radioactive, emettitore cobalt formation of 60
range beams and having a period of halving that is equal to 5 years.