Publication at Faculty of Mathematics and Physics |
2012
Abstract
The Gd-155(n,gamma) reaction was measured with the DANCE gamma-ray calorimeter at the Los Alamos Neutron Science Center. Spins were determined for the s-wave resonances by analysis of the gamma-ray multiplicity distributions.
The analysis was performed with a pattern recognition method. The resulting level densities for the J = 1 and 2 resonances are in qualitative agreement with the expected 2J + 1 dependence.
The average s-wave resonance spacing was determined to be D-0 = 1.62 +/- 0.15 eV. Analysis of the neutron resonances with the code SAMMY yielded the s-wave strength function S-0 = 1.99 +/- 0.28 x 10(-4) and the average total radiative width Gamma(gamma) = 120 +/- 3 meV.