Prospects for High Energy Resolution Gamma Ray Spectroscopy with Europium-Doped Strontium Iodide

Journal Article · Fri Apr 03 00:00:00 EDT 2009 · Proceedings of the Materials Research Society, vol. 1164, L11, March 1, 2009, pp. 04

DOI:https://doi.org/10.1557/PROC-1164-L11-04· OSTI ID:1009210

Cherepy, N J; Payne, S A; Hawrami, R; Burger, A; Boatner, L; Van Loef, E; Shah, K

Europium-doped strontium iodide scintillators offer a light yield exceeding 100,000 photons/MeV and excellent light yield proportionality, while at the same time, SrI{sub 2} is readily grown in single crystal form. Thus far, our collaboration has demonstrated an energy resolution with strontium iodide of 2.6% at 662 keV and 7.6% at 60 keV, and we have grown single crystals surpassing 30 cm{sup 3} in size (with lower resolution). Our analysis indicates that SrI{sub 2}(Eu) has the potential to offer 2% energy resolution at 662 keV with optimized material, optics, and read-out. In particular, improvements in feedstock purity may result in crystal structural and chemical homogeneity, leading to improved light yield uniformity throughout the crystal volume, and consequently, better energy resolution. Uniform, efficient light collection and detection, is also required to achieve the best energy resolution with a SrI{sub 2}(Eu) scintillator device.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 1009210
• Report Number(s): LLNL-JRNL-411870; TRN: US1101410
• Journal Information: Proceedings of the Materials Research Society, vol. 1164, L11, March 1, 2009, pp. 04, Vol. 1164, Issue L11
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
36 MATERIALS SCIENCE
71 CLASSICAL AND QUANTUMM MECHANICS
GENERAL PHYSICS
DETECTION
ENERGY RESOLUTION
MONOCRYSTALS
OPTICS
PHOSPHORS
RESOLUTION
SPECTROSCOPY
STRONTIUM IODIDES