Excitation function and half-life for the fission isomer240mPu from the238U(?, 2n)240mPu reaction

Abstract

The excitation function for the fission isomer 24~ produced in the reaction of 23su with ~ particles, has been measured at laboratory incident energies ranging from 20.1 to 27.3 MeV. A value of 3 8 +0.6 9 -0.4 ns was obtained for the half-life of 24~The results are compared with other measurements performed using different experimental methods.