HIGH-RESOLUTION POSITRON LIFETIME SPECTROMETER WITH BaF2 SCINTILLATORS.

被引：2
|
作者：
Rajainmaki, H. [1 ]
机构：
[1] Univ of Jyvaskyla, Jyvaskyla, Finl, Univ of Jyvaskyla, Jyvaskyla, Finl
来源：
Applied Physics A: Solids and Surfaces | 1987年 / A42卷 / 03期
关键词：
BARIUM COMPOUNDS - SCINTILLATION COUNTERS;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The author reports on the design of a fast coincidence positron lifetime spectrometer, which is based on single crystal barium fluoride (BaF//2) scintillators. A good time resolution (190 ps, FWHM), combined with a high efficiency, has been obtained in the normal experimental set-up (with cathode earthed in the photo multipliers). The pile-up effect is observed to disturb the measured lifetimes in the 180 degree geometry due to the high detection efficiency of the BaF//2 scintillator.
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页码：205 / 208
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