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Proceedings Paper

CVD diamond for beta particle detection in a gamma-ray background
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Paper Abstract

High purity, CVD grown diamond is a good candidate material for beta particle detection at elevated temperature in the presence of a gamma ray background. Due to its wide band gap, low noise detector operation is possible at temperatures in excess of 200 °C. Its low atomic number limits its gamma-ray interaction probability. Stacked diamond detectors operated in coincidence can further reduce background due to gamma-ray interactions. In addition, high charge carrier mobility and high breakdown voltage enable high count rate operation. In this paper we report on gamma-ray and beta particle detection of CVD diamond detectors with thickness ranging from ~ 0.1 mm to 0.5 mm. CVD grown diamond materials were acquired from Element Six. Planar devices were fabricated by depositing Au/Cr contacts by thermal evaporation. Measurements of single diamond detectors and stacked detectors operated in coincidence as well as measurements at elevated temperatures are presented in this paper.

Paper Details

Date Published: 13 September 2018
PDF: 14 pages
Proc. SPIE 10762, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XX, 107620Z (13 September 2018); doi: 10.1117/12.2323695
Show Author Affiliations
Paul Bennett, Radiation Monitoring Devices, Inc. (United States)
Alireza Kargar, Radiation Monitoring Devices, Inc. (United States)
Leonard Cirignano, Radiation Monitoring Devices, Inc. (United States)
Hadong Kim, Radiation Monitoring Devices, Inc. (United States)
Kanai Shah, Radiation Monitoring Devices, Inc. (United States)


Published in SPIE Proceedings Vol. 10762:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XX
Stephen A. Payne; Ralph B. James; Arnold Burger; Michael Fiederle, Editor(s)

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