Neutron capture reactions on Mo and Gd isotopes using the DANCE array

Abstract

The γ rays following the 94,95 Mo(n, γ)Mo reactions have been studied by the time-of-flight method with the DANCE (Detector for Advanced Neutron Capture Experiments) array of 160 BaF 2 scintillation detectors at the Los Alamos Neutron Science Center. The targets were enriched samples. The γ-ray multiplicities and energy spectra for different multiplicities were measured in s-and p-wave resonances up to E n = 10 keV for 94 Mo and up to E n = 2 keV for 95 Mo. Preliminary analysis assigned definite spins and parities in 96 Mo for about 60% of the resonances, while tentative spins and parities were assigned for the rest of observed resonances. In 95 Mo the parities were determined for the observed resonances, confirming previously known assignments. Workshop on Photon Strength Functions and Related Topics