Improving neutron detection in semiconducting 6LiInSe2

Ashley C. Stowe; Brenden Wiggins; Pijush Bhattacharya; Eugene Tupitsyn; Mike Groza; Liviu Matei; Keivan Stassun; Elan Herrera; Eric Lukosi; Arnold Burger

doi:10.1117/12.2062139

5 September 2014 Improving neutron detection in semiconducting ⁶LiInSe₂

Ashley C. Stowe, Brenden Wiggins, Pijush Bhattacharya, Eugene Tupitsyn, Mike Groza, Liviu Matei, Keivan Stassun, Elan Herrera, Eric Lukosi, Arnold Burger

Author Affiliations +

Proceedings Volume 9213, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XVI; 92130B (2014) https://doi.org/10.1117/12.2062139
Event: SPIE Optical Engineering + Applications, 2014, San Diego, California, United States

Abstract

Chalcopyrite crystals of ⁶LiInSe₂ have recently been shown to respond to gamma and thermal neutron radiation. Thus far, large crystals have been prepared although the charge collection efficiency has not been sufficient for high energy resolution. In an effort to improve energy resolution needed for gamma spectroscopy as well as pulse shape discrimination for mixed gamma neutron fluxes, the precipitate concentration within the ⁶LiInSe₂ crystal have been studied. The precipitate volume greatly affects the energy resolution in the pulse height spectrum. Further, the charge mobility varies greatly with holes being preferentially trapped by these precipitates or some other defect site within the crystal.

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Ashley C. Stowe, Brenden Wiggins, Pijush Bhattacharya, Eugene Tupitsyn, Mike Groza, Liviu Matei, Keivan Stassun, Elan Herrera, Eric Lukosi, and Arnold Burger "Improving neutron detection in semiconducting ⁶LiInSe₂", Proc. SPIE 9213, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XVI, 92130B (5 September 2014); https://doi.org/10.1117/12.2062139

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