24 January 2011 GaN as a detector of α-particles and neutrons
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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.
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A. Y. Polyakov, A. Y. Polyakov, N. B. Smirnov, N. B. Smirnov, A. V. Govorkov, A. V. Govorkov, In-Hwan Lee, In-Hwan Lee, S. J. Pearton, S. J. Pearton, N. G. Kolin, N. G. Kolin, I. L. Gazizov, I. L. Gazizov, V. M. Zalyetin, 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); doi: 10.1117/12.869686; https://doi.org/10.1117/12.869686

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