Angular Distribution of Fragments from Fission ofU238andTh232by 45-, 80-, and 155-Mev Protons

Abstract

Measurements have been made of the angular distributions of ${\mathrm{Sr}}^{91,92}$, ${\mathrm{Ag}}^{112,113}$, ${\mathrm{Ba}}^{139}$ and the total fission products from proton-induced fission of ${\mathrm{U}}^{238}$ at 45, 80, and 155 Mev and ${\mathrm{Th}}^{232}$ at 45 and 155 Mev. The anisotropy decreases with increasing energy and is negative for asymmetric fission at 155 Mev.