IT HAS long been known that Russian scientists began to think about a hydrogen bomb almost as early as did Teller and that by the end of 1948 they had the basis for a design, having arrived independently at the idea that a fission bomb
could be used to trigger a thermonuclear explosion.
Teller had the idea of using the X-rays that carry off most of the energy from the primary fission bomb
to do the compression.
The Soviets tested a fission bomb
in 1949 and a fusion hydrogen bomb in 1954.
The last three chapters are devoted to the two nuclear fission bombs
which ended the Second World War, one using Uranium 235 isotope and the other plutonium.
It would, for example, eclipse the yield of the fission bomb
that destroyed Hiroshima in 1945.
1908), persuaded Albert Einstein to send a letter to President Roosevelt, urging him to proceed with the development of a nuclear fission bomb
so that Hitler would not get one first.
After all the technique has been around all this century because its lethal effect on micro-organisms was discovered early on, and after the development of the nuclear fission bomb
during the Second World War much effort was put into checking the biological effects that might ensue from an atomic explosion.
html) Yonhap report cited officials saying that the country has not ruled out the possibility of North Korea testing a boosted fission bomb
though the effect of such a bomb is much less than that of a hydrogen bomb.
He has also pointed to the fact that the shaft with the hydrogen bomb device had remained intact, in contrast to the fission bomb
, one which had produced a crater some 35m wide.
MAUD Committee is formed, headed by Sir Henry Tizard, to work out the basic principles of fission bomb
In the United States, President Roosevelt signed a secret order on December 6, 1941, that ordered the start of the so-called Manhattan Project to develop a nuclear fission bomb
It is also possible that North Korea is using a "boosted" nuclear weapon, which involves a small amount of fusion to amplify the explosive capability of a fission bomb
On July 16, 1945, at a site 60 miles northwest of the town of Alamogordo, New Mexico, a nuclear fission bomb
(popularly called an atomic bomb, or an A-bomb) made of plutonium was detonated before dawn.
It takes countries many years to independently develop the technology needed to create a fission bomb
and then make the subsequent jump to fusion weapons.
Of the two larger explosions, it was claimed one was of an improved fission bomb
and the other was a thermonuclear device," Iyengar wrote.