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Updated: Apr 27, 2026

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Published on: January 30, 2020
Development of a large-area silicon α-particle detector
Linh T Tran1, Dale A Prokopovich2, Michael L F Lerch1
1Centre for Medical Radiation Physics, University of Wollongong, Wollongong 2522, NSW, Australia.
Abstract:
Circular ion-implanted silicon detector of α-particles with a large, 5-cm(2), sensitive area has been developed. An advantage of the detector is that the detector surface is easily cleanable with chemicals. The hardened surface of the detector shows no signs of deterioration of the spectroscopic and electrical characteristics upon repeated cleaning. The energy resolution along the diameters of the detector was (1.0±0.1)% for the 5.486-MeV α-particles. Detailed tests of the charge collection efficiency and uniformity of the detector entrance window were also performed with a 5.5-MeV He(2+) microbeam.
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