Temperature dependence of CsI(Tl) gamma-ray excited scintillation characteristics
- Univ. of Michigan, Ann Arbor, MI (United States)
Gamma-ray excited emission spectrum, absolute scintillation yield, rise and decay time constants, and thermoluminescence emissions of CsI(Tl) were measured at -100 to +50 C, for crystals from 4 different vendors. The thermoluminescence glow curves were the only property that varied significantly from crystal to crystal; room temperature operation in current mode could be susceptible to temperature fluctuations. The CsI(Tl) emission spectrum has emission bands peaking around 400 and 560 nm; the former band disappears between -50 and -75 C. The RT absolute scintillation yield was calculated to be 65,500{plus_minus}4,100 photons/MeV. The two primary decay time constants increases about exponentially with inverse temperature. An ultra-fast decay component was confirmed. Applications are discussed.
- Research Organization:
- Oak Ridge Inst. for Science and Education, TN (United States)
- Sponsoring Organization:
- USDOE; Department of Health and Human Services
- DOE Contract Number:
- AC05-76OR00033; FG02-86NE37969; AC03-76SF00098
- OSTI ID:
- 10187904
- Report Number(s):
- DOE/OR/00033-T542; ON: DE94000836; CNN: Grant P01-HL25840; R01-CA48002; TRN: 93:021938
- Resource Relation:
- Other Information: DN: Submitted by J.D. Valentine to University of Michigan.; TH: Thesis (Ph.D.); PBD: 1993
- Country of Publication:
- United States
- Language:
- English
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