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Title: History and current status of strontium iodide scintillators

Abstract

Eu-doped strontium iodide single crystal growth has reached maturity and prototype SrI 2(Eu)-based gamma ray spectrometers provide detection performance advantages over standard detectors. SrI 2(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 Eu 2+-doped crystals. As a result, its excellent energy resolution, lack of intrinsic radioactivity or toxicity, and commercial availability make SrI 2(Eu) the ideal scintillator for use in handheld radioisotope identification devices. A 6-lb SrI 2(Eu) radioisotope identifier is described.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2];  [2];  [3];  [4];  [5];  [5];  [5];  [1];  [1];  [6]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Fisk Univ., Nashville, TN (United States)
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Bridgeport Instruments, LLC, Austin, TX (United States)
  5. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Northrop Grumman Synoptics, Charlotte, NC (United States)
  6. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Radiation Monitoring Devices, Inc., Watertown, MA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1438712
Report Number(s):
LLNL-JRNL-738122
Grant/Contract Number:
AC52-07NA27344
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
SPIE Optical Engineering+ Applications
Additional Journal Information:
Journal Name: SPIE Optical Engineering+ Applications; Journal Volume: 10392
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 36 MATERIALS SCIENCE; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Strontium Iodide; scintillator; gamma ray spectroscopy; gamma spectromete

Citation Formats

Cherepy, Nerine J., Beck, Patrick R., Payne, Stephen A., Swanberg, Erik L., Thelin, Peter A., Fisher, Scott E., Hunter, Steven L., Wihl, Brian, Shah, Kanai S., Hawrami, Rastgo, Boatner, Lynn A., Momayezi, Michael, Stevens, Kevin T., Randles, Mark H., Solodovnikov, Denys, Delzer, Cordell J., Shahbazi, Shayan, and Burger, Arnold. History and current status of strontium iodide scintillators. United States: N. p., 2017. Web. doi:10.1117/12.2276302.
Cherepy, Nerine J., Beck, Patrick R., Payne, Stephen A., Swanberg, Erik L., Thelin, Peter A., Fisher, Scott E., Hunter, Steven L., Wihl, Brian, Shah, Kanai S., Hawrami, Rastgo, Boatner, Lynn A., Momayezi, Michael, Stevens, Kevin T., Randles, Mark H., Solodovnikov, Denys, Delzer, Cordell J., Shahbazi, Shayan, & Burger, Arnold. History and current status of strontium iodide scintillators. United States. doi:10.1117/12.2276302.
Cherepy, Nerine J., Beck, Patrick R., Payne, Stephen A., Swanberg, Erik L., Thelin, Peter A., Fisher, Scott E., Hunter, Steven L., Wihl, Brian, Shah, Kanai S., Hawrami, Rastgo, Boatner, Lynn A., Momayezi, Michael, Stevens, Kevin T., Randles, Mark H., Solodovnikov, Denys, Delzer, Cordell J., Shahbazi, Shayan, and Burger, Arnold. Fri . "History and current status of strontium iodide scintillators". United States. doi:10.1117/12.2276302.
@article{osti_1438712,
title = {History and current status of strontium iodide scintillators},
author = {Cherepy, Nerine J. and Beck, Patrick R. and Payne, Stephen A. and Swanberg, Erik L. and Thelin, Peter A. and Fisher, Scott E. and Hunter, Steven L. and Wihl, Brian and Shah, Kanai S. and Hawrami, Rastgo and Boatner, Lynn A. and Momayezi, Michael and Stevens, Kevin T. and Randles, Mark H. and Solodovnikov, Denys and Delzer, Cordell J. and Shahbazi, Shayan and Burger, Arnold},
abstractNote = {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. As a result, 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.},
doi = {10.1117/12.2276302},
journal = {SPIE Optical Engineering+ Applications},
number = ,
volume = 10392,
place = {United States},
year = {Fri Sep 15 00:00:00 EDT 2017},
month = {Fri Sep 15 00:00:00 EDT 2017}
}

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