First time measurement of gamma-ray excited LaBr3:5% Ce3+and LaCl3:10% Ce3+temperature dependent properties

✍ Scribed by Bizarri, G. ;de Haas, J. T. M. ;Dorenbos, P. ;van Eijk, C. W. E.

• Book ID: 105363809
• Publisher: John Wiley and Sons
• Year: 2006
• Tongue: English
• Weight: 249 KB
• Volume: 203
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.200622081

✦ Synopsis

Abstract

We have measured for the first time the temperature dependence of LaBr~3~:5% Ce^3+^ and LaCl~3~:10% Ce^3+^ 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 LaBr~3~ 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 LaCl~3~ 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 LaBr~3~:5% Ce^3+^ and LaCl~3~:10% Ce^3+^ crystals can be used in applications where temperature conditions are extreme such as in oil well logging. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)