Fast Neutron Inelastic Scattering Cross Section Measurements for Five Levels in 232Th

The in elastic scattering cross section for five low lying states in 232Th isotope were measured form (n, n δ) reaction using time-of-flight technique and by applying a suitable pulse-shape discrimination method. The fast neutrons beam was provided from a research reactor in the energy range 0.4-3.5 MeV. The integral cross section values were deduced for the 714.3(1-),774(3-), 785.2(2+)829.6(3+),883.3(5-) keV state relative to the standard cross data of 847(2+) first excited state of 56Fe. Cross section values were compared to the published results and with model calculation based on the compound - nucleus statistical model implemented in the CINDY programme. (author)