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Proceedings Paper

History and current status of strontium iodide scintillators
Author(s): 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
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Paper 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.

Paper Details

Date Published: 15 September 2017
PDF: 7 pages
Proc. SPIE 10392, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIX, 1039202 (15 September 2017); doi: 10.1117/12.2276302
Show Author Affiliations
N. J. Cherepy, Lawrence Livermore National Lab. (United States)
P. R. Beck, Lawrence Livermore National Lab. (United States)
S. A. Payne, Lawrence Livermore National Lab. (United States)
E. L. Swanberg, Lawrence Livermore National Lab. (United States)
B. M. Wihl, Lawrence Livermore National Lab. (United States)
S. E. Fisher, Lawrence Livermore National Lab. (United States)
S. Hunter, Lawrence Livermore National Lab. (United States)
P. A. Thelin, Lawrence Livermore National Lab. (United States)
C. J. Delzer, Lawrence Livermore National Lab. (United States)
S. Shahbazi, Lawrence Livermore National Lab. (United States)
A. Burger, Radiation Monitoring Devices (United States)
K. S. Shah, Fisk Univ. (United States)
R. Hawrami, Fisk Univ. (United States)
L. A. Boatner, Oak Ridge National Lab. (United States)
M. Momayezi, Bridgeport Instruments, LLC (United States)
K. Stevens, Northrop Grumman SYNOPTICS (United States)
M. H. Randles, Northrop Grumman SYNOPTICS (United States)
D. Solodovnikov, Northrop Grumman SYNOPTICS (United States)


Published in SPIE Proceedings Vol. 10392:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIX
Arnold Burger; Ralph B. James; Michael Fiederle; Larry Franks; Stephen A. Payne, Editor(s)

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