Abstract
In this paper, we demonstrate a detector that has a high neutron-to-gamma discrimination of 8.5×10 5 with a high thermal neutron detection efficiency of 39% when exposed to a high gamma-ray field of 10 9 photons/cm 2 s. The detector is based on a silicon pillar structure filled with a neutron converter material ( 10 B) designed to have high thermal neutron detection efficiency. The pillar dimensions are 50 μm pillar height, 2 μm pillar diameter and 2 μm spacing between adjacent pillars.
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Shao, Q., Conway, A. M., Voss, L. F., Radev, R. P., Nikolić, R. J., Dar, M. A., & Cheung, C. L. (2015). Experimental determination of gamma-ray discrimination in pillar-structured thermal neutron detectors under high gamma-ray flux. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 799, 203–206. https://doi.org/10.1016/j.nima.2015.07.045
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