Mass spectrometric determination of Rb fission yields from ³He and ⁴He induced fission of ²³⁸U and ²³²Th

Abstract

Cumulative and independent fission yields of Rb isotopes have been measured for 3He and 4He induced fission of 232Th and 238U at bombarding energies slightly above the Coulomb barriers. The on-line mass spectrometric technique provided yields for masses 89–97. Mean masses and widths of the Rb independent yield distributions were obtained and were compared to other fissioning systems with excitation energies up to 160 MeV.