Fission Fragment angular momentum as a function of emission angle In ~(238)U (alpha, f)

摘要

In order to investigate the role of nuclear structure on the tilting mode, the high spin fraction (HSF = (Y_h/Y_h+Y_1)) of ~(131)Te in ~(238)U(alpha_(40)Mev, f) was measured using off line gamma ray spectrometric technique. From the HSF, average spin (J_(av)) of fission fragment has been deduced using statistical model analysis. The J_(av) value of ~(131)Te is found to remain nearly constant (10h) from 90 deg to 20 deg. On the other hand the J_(av) value of ~(132)I from our earlier work shows a drastic decrease (33 percent) from 11.4h at 90 deg to 1.6h at 20 deg.