K-Components for the Approx. 1.4-, Approx. 1.6-, and Approx. 1.7-MeV Structures in the Fission of exp 232 Th + N

摘要

Neutron-induced angle-integrated fission cross sections of exp 232 Th were measured from 0.7 to 9 MeV with a nominal neutron energy resolution of 0.15 ns/m. Data were taken for the angular intervals 0 to 23.4 exp 0 , 0 to 33.7 exp 0 , 0 to 51.7 exp 0 , and 0 to 90 exp 0 . The structures at approx. 1.4, approx. 1.6, and approx. 1.7 MeV were interpreted in terms of rotational bands with K = 1/2, 3/2, and greater than or equal to 5/2. The approximate relative fission strengths for the K-bonds are in the proportion 1.7:2.4:1.0, 0.0:2.6:1.0, and 1.0:2.8:0.0 for the three structures, respectively. (ERA citation 06:029536)