Before revision: Group Half-Life (s) Decay Constant (s−1) Energy (keV) Yield, Neutrons per Fission Fraction 1 55.72 0.0124 250 0.00052 0.000215 2 22.72 0.0305 560 0.00346 0.001424 3 6.22 0.111 405 0.00310 0.001274 4 2.30 0.301 450 0.00624 0.002568 5 0.610 1.14 - 0.00182 0.000748 6 0.230 3.01 - 0.00066 0.000273 Importance in nuclear fission basic research The standard deviation of the final kinetic energy distribution as a function of mass of final fragments from low energy fission of uranium 234 and uranium 236, presents a peak around light fragment masses region and another on heavy fragment masses region.
After revision: Group Half-Life (s) Decay Constant (s−1) Energy (keV) Yield, Neutrons per Fission Fraction 1 55.72 0.0124 250 0.00052 0.000215 2 22.72 0.0305 560 0.00346 0.001424 3 6.22 0.111 405 0.00310 0.001274 4 2.30 0.301 450 0.00624 0.002568 5 0.610 1.14 - 0.00182 0.000748 6 0.230 3.01 - 0.00066 0.000273 Importance in nuclear The standard deviation of the final kinetic energy distribution as a function of mass of final fragments from low energy fission of uranium 234 and uranium 236, presents a peak around light fragment masses region and another on heavy fragment masses region.