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Updated: Jun 4, 2025
Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera
Published on: January 30, 2020
Development of anticoincidence detector specializing in small-angle Compton scattering gamma rays for boron neutron
Hiroyuki Miyamaru1, Kien Nguyen Quang1, Huy Le Viet1
1Division of Quantum and Radiation Engineering, Graduate School of Engineering, Osaka Metropolitan University, 1-2 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8570, Japan.
Abstract:
A novel anticoincidence detector is proposed for the measurement of 478 keV gamma radiation for evaluation of boron neutron capture therapy. The Compton continuum around the target photopeak position is effectively suppressed by measuring only the Compton gamma rays scattered at small angles from the primary detector. A numerical evaluation using Monte Carlo simulations estimated an 80% reduction in counts, and the developed prototype detector showed 4% suppression of the Compton continuum of cobalt-60 gamma rays.
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