INELASTIC SCATTERING CROSS SECTIONS OF VIBRATIONAL STATES IN 232Th FOR NEUTRONS FROM 2.3 TO 3.0 MeV

INELASTIC SCATTERING CROSS SECTIONS OF VIBRATIONAL STATES IN ²³²Th FOR NEUTRONS FROM 2.3 TO 3.0 MeV

J.J. Egan, A. Aliyar, C.A. Horton, G.H.R. Kegel and A. Mittler

Department of Physics and Applied Physics
University of Lowell
Lowell, Massachusetts, 01854 USA

Neutron inelastic scattering measurements on ²³²Th have been carried out in the incident neutron energy range 2.3 to 3.0 MeV. Cross sections have been obtained for the following vibrational levels or level groups: (714.2 + 730.3) keV; (774.1 + 774.4 + 785.2 + 829.5) keV; (872.7 + 883.3 + 889.6) keV; and 960.2 keV. In addition we have obtained cross sections for the 6⁺ ground state rotational band level at 333.2 keV. Excitation functions have been measured at 125° in 100 keV steps, and angular distributions have been measured at 2.4 MeV over the angular range 25° to 135° in 10° steps. The data are compared to ENDF/B-V.