Nuclear Fission

Slide 1 : Nuclear Fission

Slide 2 : U Kr Ba 92U235 + 0n1 56Ba142+36Kr90+30n1+Q(200MeV)

Slide 3 : The Release of Nuclear Energy Such a splitting, or fission, reaction was achieved in 1939. The nucleus of a uranium isotope (U-235), when bombarded by neutrons, split into two smaller nuclei. The reaction also produced new neutrons and released about 200 mev of energy per fission. One example of the nuclear fission reaction is as follows: 92U235 + 0n1 → 36Kr90 + 56Ba142 + 3 0n1 The significance of this reaction is that if one pound of uranium undergoes fission, it will release energy equal to that released by the burning of 3,000 tons of coal or 9,000 tons of TNT. Later experiments proved that plutonium and thorium could also undergo nuclear fission. Plutonium is an element made artificially by bombarding uranium 238 with neutrons.

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