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Proceedings Paper

Strontium iodide scintillators for high energy resolution gamma ray spectroscopy
Author(s): Cody M Wilson; Edgar V. van Loef; Jarek Glodo; Nerine Cherepy; Giulia Hull; Stephen Payne; Woon-Seng Choong; William Moses; Kanai S. Shah
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Paper Abstract

Recently SrI2, a scintillator patented by Hofstadter in 1968, has been rediscovered and shown to possess remarkable scintillation properties. The light output of SrI2:Eu2+ has been measured to be even higher than previously observed and exceeds 120,000 photons/MeV, making it one of the brightest scintillators in existence. The crystal also has excellent energy resolution of less than 3% at 662 keV. The response is highly linear over a wide range of gamma ray energies. The emission of SrI2:Eu2+ and SrI2:Ce3+/Na+ is well-matched to both photomultiplier tubes and blue-enhanced silicon photodiodes. While SrI2:Eu2+ is relatively slow, SrI2:Ce3+/Na+ has a fast response. SrI2 crystals with many different dopant concentrations have been grown and characterized. In this presentation, crystal growth techniques as well as the effects of dopant concentration on the scintillation properties of SrI2, over the range 0.5% to 8% Eu2+ and 0.5% to 2% Ce3+/Na+, will be discussed in detail.

Paper Details

Date Published: 5 September 2008
PDF: 7 pages
Proc. SPIE 7079, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics X, 707917 (5 September 2008); doi: 10.1117/12.806291
Show Author Affiliations
Cody M Wilson, Radiation Monitoring Devices, Inc. (United States)
Edgar V. van Loef, Radiation Monitoring Devices, Inc. (United States)
Jarek Glodo, Radiation Monitoring Devices, Inc. (United States)
Nerine Cherepy, Lawrence Livermore National Lab. (United States)
Giulia Hull, Lawrence Livermore National Lab. (United States)
Stephen Payne, Lawrence Livermore National Lab. (United States)
Woon-Seng Choong, Lawrence Berkeley National Lab. (United States)
William Moses, Lawrence Berkeley National Lab. (United States)
Kanai S. Shah, Radiation Monitoring Devices, Inc. (United States)


Published in SPIE Proceedings Vol. 7079:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics X
Arnold Burger; Larry A. Franks; Ralph B. James, Editor(s)

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