She calculated that the products of the fission reaction were lighter than the initial uranium, by about one fifth of a proton.
32.
When the reflector was ejected from the unit, the reactor could not sustain the nuclear fission reaction and the reactor permanently shut down.
33.
He also provided specifications for the payload, calculations and relationships for setting of the fission reaction, and schematics for labs producing weapons-grade isotopes.
34.
However, a recent fission reaction such as in a reactor or in a nuclear explosion will produce small quantities of these radioactive isotopes.
35.
Thus, normal tissues, if they have not taken up sufficient amounts of boron-10, can be spared from the nuclear capture and fission reactions.
36.
Niger, in West Africa, is the third-largest producer of mined uranium, which is used for nuclear fission reactions in both weapons and power-generating reactors.
37.
Fusion reactions are much more energetic per unit mass of fuel than fission reactions, but starting the fusion chain reaction is much more difficult.
38.
He said the license is valid for 10 years from the date when fission reaction was started and will then have to be renewed.
39.
Szil�rd, however, did not propose fission as the mechanism for his chain reaction, since the fission reaction was not yet discovered or even suspected.
40.
We have received permission to start a series of steps that will eventually lead to the renewal of the fission reaction some time Monday,
