Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1827349 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2009 | 7 Pages |
Abstract
The temperature dependence of light yield and decay constants of a cerium-doped yttrium aluminum perovskite [YAP(Ce)] scintillator excited by α-ray irradiation is studied between 290 and 460 K. The scintillation is found to be composed of three decay components with different temperature dependencies. A fast scintillation component with a decay time of â¼6ns is almost independent of temperature; the decay time of the main component decreases from 32 to 26 ns with increase in temperature from 290 to 400 K but increases above 400 K, and a slow component with a decay time larger than 240 ns becomes clearly visible at temperatures below 360 K. The total light yield increases slightly as the temperature increases up to 330 K and decreases above 330 K. These results are essentially interpreted using a two-shallow-trap model proposed by Wojtowicz et al., but an additional mechanism would be required at higher temperatures.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Instrumentation
Authors
Y. Toriyabe, E. Yoshida, J. Kasagi,