期刊
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
卷 203, 期 5, 页码 R41-R43出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssa.200622081
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We have measured for the first time the temperature dependence of LaBr3:5% Ce3+ and LaCl3: 10% Ce3+ gamma-ray excited light yields and decay curves between 100 and 600 K. Under gamma-ray excitation, both scintillators present a very good thermal stability over the entire temperature range. The light yield of LaBr3 is maximum at 100 K and decreases monotonously from 100 to 600 K. The decrease at 600 K does not exceed 15% of the maximum value. The light yield of LaCl3 is maximum at 600 K and decreases with decreasing temperatures. The lowest value is reached at 150 K and corresponds to 90% of the maximum light yield recorded at 600 K. Our results show that LaBr3 : 5% Ce3+ and LaCl3: 10% Ce3+ crystals can be used in applications where temperature conditions are extreme such as in oil well logging.
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