GaN as a detector of a-particles and neutrons

A. Y. Polyakov; N. B. Smirnov; A. V. Govorkov; In-Hwan Lee; S. J. Pearton; N. G. Kolin; I. L. Gazizov; V. M. Zalyetin

doi:10.1117/12.869686

24 January 2011 GaN as a detector of α-particles and neutrons

A. Y. Polyakov, N. B. Smirnov, A. V. Govorkov, In-Hwan Lee, S. J. Pearton, N. G. Kolin, I. L. Gazizov, V. M. Zalyetin

Proceedings Volume 7945, Quantum Sensing and Nanophotonic Devices VIII; 79451F (2011) https://doi.org/10.1117/12.869686
Event: SPIE OPTO, 2011, San Francisco, California, United States

Abstract

Properties of GaN radiation detectors are analyzed. It is shown that present day epitaxial material is suitable for detection of α-particles with the charge collection efficiency close to 100%. Such detectors can operate at temperatures of at least 60°C and withstand irradiation with reactor neutrons fluences higher than 1015 cm^-2. They keep the collection efficiency at 30% even after irradiation with 2×1016 cm^-2 neutron fluence. Registration of thermal neutrons with GaN detectors can also be achieved by using ¹⁰B converter and the efficiency of registration is determined by the ¹⁰B conversion efficiency from neutrons to low energy a-particles.

Citation Download Citation

A. Y. Polyakov, N. B. Smirnov, A. V. Govorkov, In-Hwan Lee, S. J. Pearton, N. G. Kolin, I. L. Gazizov, and V. M. Zalyetin "GaN as a detector of α-particles and neutrons", Proc. SPIE 7945, Quantum Sensing and Nanophotonic Devices VIII, 79451F (24 January 2011); https://doi.org/10.1117/12.869686

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