Neutron-induced gamma-ray production cross sections for the first excited-state transitions in Ne-20 and Ne-22

作者：MacMullin S^*; Boswell M; Devlin M; Elliott S R; Fotiades N; Guiseppe V E; Henning R; Kawano T; LaRoque B H; Nelson R O; O'Donnell J M

来源：Physical Review C, 2012, 86(6): 067601.

DOI：10.1103/PhysRevC.86.067601

Background: Neutron-induced reactions are a significant concern for experiments that require extremely low levels of radioactive backgrounds. Measurements of gamma-ray production cross sections over a wide energy range help to predict and identify neutron backgrounds in these experiments.
Purpose: The purpose of this experiment is to determine partial gamma-ray production cross sections for neutron-induced reactions in natural neon.
Methods: The broad spectrum neutron beam at the Los Alamos Neutron Science Center (LANSCE) was used for the measurement. Gamma rays from neutron-induced reactions were detected using the GErmanium Array for Neutron Induced Excitations (GEANIE).
Results: Partial gamma-ray cross sections were measured for the first excited-state transitions in Ne-20 and Ne-22. The measured cross sections were compared to the TALYS and CoH3 nuclear reaction codes.
Conclusions: These are the first experimental data for (n, n') reactions in neon. In addition to providing data to aid in the prediction and identification of neutron backgrounds in low-background experiments, these new measurements will help refine cross-section predictions in a mass region where models are not well constrained. DOI: 10.1103/PhysRevC.86.067601

• 出版日期2012-12-21