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Title: History and current status of strontium iodide scintillators

Journal Article · · SPIE Optical Engineering+ Applications
DOI:https://doi.org/10.1117/12.2276302· OSTI ID:1438712
 [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)
+ Show Author Affiliations

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.

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1438712
Report Number(s):
LLNL-JRNL-738122
Journal Information:
SPIE Optical Engineering+ Applications, Vol. 10392
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

References (10)

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journal October 2011
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Instrument Development and Gamma Spectroscopy With Strontium Iodide journal April 2013

Figures / Tables (10)

Figure 1a(p. 3)figure Figure 1a
Figure 1b(p. 3)figure Figure 1b
Figure 2a(p. 4)figure Figure 2a
Figure 2b(p. 4)figure Figure 2b
Figure 3(p. 5)figure Figure 3
Table 1(p. 5)table Table 1
Figure 4a(p. 6)figure Figure 4a
Figure 4b(p. 6)figure Figure 4b
Figure 5(p. 7)figure Figure 5
Figure 6(p. 7)figure Figure 6

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Related Subjects

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