Use of an Imaging Spectrometer for Characterization of a Cesium Dosimeter Calibration Facility

Journal Article · 13 January 2020 · Health Physics

DOI: https://doi.org/10.1097/HP.0000000000001150 · OSTI ID:1616466

Champion, Roger J. ^[1]; Golduber, Robert M. ^[2]; Kearfott, Kimberlee J. ^[2]

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1. Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Nuclear Engineering and Radiological Science; University of Michigan
2. Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Nuclear Engineering and Radiological Science

Past investigations into the characterization of a space-constrained ¹³⁷Cs dosimetry calibration facility did not provide detailed positional measurements of gamma ray spectra. Here in this paper, a commercially available Compton imaging system, or imaging spectrometer, was used to accomplish this. This resulted in both spectral information and point of origin information for the measured gamma rays. The relationship between measured spectra and position was explored relative to a dosimetry phantom. The Compton equation was found to accurately describe the relationship for positions associated with larger scattering angles and was found to be less reliable for those associated with smaller angles.

• Research Organization: Univ. of Michigan, Ann Arbor, MI (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA), Office of Nonproliferation and Verification Research and Development (NA-22)
• Grant/Contract Number: NA0002534; NA0003920
• OSTI ID: 1616466
• Journal Information: Health Physics, Journal Name: Health Physics Journal Issue: 4 Vol. 118; ISSN 0017-9078
• Publisher: Health Physics SocietyCopyright Statement
• Country of Publication: United States
• Language: English