Performance of A Compact Multi-crystal High-purity Germanium Detector Array for Measuring Coincident Gamma-ray Emissions

Journal Article · Wed Feb 18 00:00:00 EST 2015 · Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment

DOI:https://doi.org/10.1016/j.nima.2015.02.022· OSTI ID:1225141

Howard, Chris ^[1]; Daigle, Stephen ^[1]; Buckner, Matt ^[1]; Erikson, Luke E. ^[2]; Runkle, Robert C. ^[2]; Stave, Sean C. ^[2]; Champagne, Art ^[1]; Cooper, Andrew ^[1]; Downen, Lori ^[1]; Glasgow, Brian D. ^[2]; Kelly, Keegan ^[1]; Sallaska, Anne ^[1]

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1. Univ. of North Carolina, Chapel Hill, NC (United States); Triangle Univ. Nuclear Lab., Durham, NC (United States)
2. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

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 segmented 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 the uncertainties with the past measurements. Details of the analysis and detector performance will be presented.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1225141
• Report Number(s): PNNL-SA-98562
• Journal Information: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 783; ISSN 0168-9002
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
HPGe array
high purity germanium
S-factor
14N(p
γ)15O
summing corrections
granular