Angular anisotropy of intermediate energy nucleon-induced fission of actinide and subactinide nuclei

Abstract

Abstract. New results of measurements of the angular distributions of proton-induced fission fragments of 182,183,184,186 W in the proton energy region 50-180 MeV are presented. The results are discussed together with earlier data, obtained for subactinide nuclei 204,206,207,208 Pb and 209 Bi and actinide nuclei 232 Th and 233,235,238 U, for both protonand neutron-induced fission. Similarity is noted of values and energy dependences of angular anisotropy of fission induced by protons and neutrons (taking into account a trivial effect of Coulomb factor) as well as influence on the anisotropy value of the emission character of fission of actinide nuclei and its connection with parameter of fissionability Z 2 /A.