History and current status of strontium iodide scintillators

N. J. Cherepy; P. R. Beck; S. A. Payne; E. L. Swanberg; B. M. Wihl; S. E. Fisher; S. Hunter; P. A. Thelin; C. J. Delzer; S. Shahbazi; A. Burger; K. S. Shah; R. Hawrami; L. A. Boatner; M. Momayezi; K. Stevens; M. H. Randles; D. Solodovnikov

doi:10.1117/12.2276302

15 September 2017 History and current status of strontium iodide scintillators

N. J. Cherepy, P. R. Beck, S. A. Payne, E. L. Swanberg, B. M. Wihl, S. E. Fisher, S. Hunter, P. A. Thelin, C. J. Delzer, S. Shahbazi, A. Burger, K. S. Shah, R. Hawrami, L. A. Boatner, M. Momayezi, K. Stevens, M. H. Randles, D. Solodovnikov

Author Affiliations +

Proceedings Volume 10392, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIX; 1039202 (2017) https://doi.org/10.1117/12.2276302
Event: SPIE Optical Engineering + Applications, 2017, San Diego, California, United States

Abstract

Eu-doped strontium iodide single crystal growth has reached maturity and prototype SrI₂(Eu)-based gamma ray spectrometers provide detection performance advantages over standard detectors. SrI₂(Eu) offers a high, proportional light yield of >80,000 photons/MeV. Energy resolution of <3% at 662 keV with 1.5” x 1.5” SrI₂(Eu) crystals is routinely achieved, by employing either a small taper at the top of the crystal or a digital readout technique. These methods overcome light-trapping, in which scintillation light is re-absorbed and re-emitted in Eu²⁺-doped crystals. Its excellent energy resolution, lack of intrinsic radioactivity or toxicity, and commercial availability make SrI2(Eu) the ideal scintillator for use in handheld radioisotope identification devices. A 6-lb SrI₂(Eu) radioisotope identifier is described.

Conference Presentation

Citation Download Citation

N. J. Cherepy, P. R. Beck, S. A. Payne, E. L. Swanberg, B. M. Wihl, S. E. Fisher, S. Hunter, P. A. Thelin, C. J. Delzer, S. Shahbazi, A. Burger, K. S. Shah, R. Hawrami, L. A. Boatner, M. Momayezi, K. Stevens, M. H. Randles, and D. Solodovnikov "History and current status of strontium iodide scintillators", Proc. SPIE 10392, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIX, 1039202 (15 September 2017); https://doi.org/10.1117/12.2276302

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