Performance of a compact multi-crystal high-purity germanium detector array for measuring coincident gamma-ray emissions
Abstract
The Multi-sensor Airborne Radiation Survey (MARS) detector is a 14-crystal array of high-purity germanium (HPGe) detectors housed in a single cryostat. The array was used to measure the astrophysical S-factor for the 14N(p,γ)15O* reaction for several transition energies at an effective center-of-mass energy of 163 keV. Owing to the granular nature of the MARS detector, the effect of gamma-ray summing was greatly reduced in comparison to past experiments which utilized large, single-crystal detectors. The new S-factor values agree within their uncertainties with the past measurements. Details of the analysis and detector performance are presented.
- Publication:
-
Nuclear Instruments and Methods in Physics Research A
- Pub Date:
- May 2015
- DOI:
- 10.1016/j.nima.2015.02.022
- Bibcode:
- 2015NIMPA.783...85H
- Keywords:
-
- HPGe array;
- High purity germanium;
- S-factor;
- <SUP>14</SUP>N(p;
- γ)<SUP>15</SUP>Ο<SUP>*</SUP>;
- Summing corrections;
- Granular