Prospects for High Energy Resolution Gamma Ray Spectroscopy with Europium-Doped Strontium Iodide
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 Laboratory (LLNL), Livermore, CA
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 1009210
- Report Number(s):
- LLNL-JRNL-411870
- Journal Information:
- Proceedings of the Materials Research Society, vol. 1164, L11, March 1, 2009, pp. 04, Journal Name: Proceedings of the Materials Research Society, vol. 1164, L11, March 1, 2009, pp. 04 Journal Issue: L11 Vol. 1164
- Country of Publication:
- United States
- Language:
- English
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