Investigations of 6LiIn(1-x)Ga(x)Se2 semi-insulating crystals for neutron detection

Brenden Wiggins; Joseph Bell; Arnold Burger; Keivan Stassun; Ashley C. Stowe

doi:10.1117/12.2186544

26 August 2015 Investigations of ⁶LiIn_1-xGa_xSe₂ semi-insulating crystals for neutron detection

Brenden Wiggins, Joseph Bell, Arnold Burger, Keivan Stassun, Ashley C. Stowe

Proceedings Volume 9593, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XVII; 95930B (2015) https://doi.org/10.1117/12.2186544
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

Neutron detectors are used for illicit material detection, neutron radiography, stellar investigations of chemical content including biological compounds in planetary terrain and to monitor nuclear power plant fuel products and radioactive waste. Li-containing chalcogenide materials are promising alternative thermal neutron detection materials due to the incorporation of the ⁶Li isotope at high density. ⁶LiInSe₂ is limited in its effective thermal neutron efficiency by ¹¹⁵In neutron capture which results in gamma decay rather than charge creation. This study includes investigations of mixed crystalline material ⁶LiIn_1-xGa_xSe₂ where the indium concentration is reduced by Ga substitution. The optical properties have been tuned by gallium substitution and radiation response has been observed.

Citation Download Citation

Brenden Wiggins, Joseph Bell, Arnold Burger, Keivan Stassun, and Ashley C. Stowe "Investigations of ⁶LiIn_1-xGa_xSe₂ semi-insulating crystals for neutron detection", Proc. SPIE 9593, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XVII, 95930B (26 August 2015); https://doi.org/10.1117/12.2186544

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