PROPERTIES OF CSI-BASED GASEOUS SECONDARY-EMISSION X-RAY-IMAGING DETECTORS

被引：31

作者：

FRUMKIN, I ^{[1
]}

BRESKIN, A ^{[1
]}

CHECHIK, R ^{[1
]}

ELKIND, V ^{[1
]}

NOTEA, A ^{[1
]}

机构：

[1] WEIZMANN INST SCI,DEPT PHYS,IL-76100 REHOVOT,ISRAEL

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1993年 / 329卷 / 1-2期

关键词：

D O I：

10.1016/0168-9002(93)90952-E

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Secondary emission detectors based on a thin solid photoconvertor coupled to a low-pressure gaseous electron multiplier provide subnanosecond, parallax-free, high accuracy X-Tay imaging. The application of CsI photoconvertors was studied over a broad photon energy range. At normal incidence, detector quantum efficiencies of 5-0.6% and localization accuracies of 200-500 mum (FWHM) were recorded with respective photon energies of 6-60 keV and CsI layers 200-4000 nm thick. At grazing incidence an improvement of the order of 1/sin 1theta was demonstrated in localization accuracy and detection efficiency. Some preliminary indications on the CsI stability are reported and radiographic images of small objects are presented. Possible future applications of these devices are discussed.

引用

页码：337 / 347

页数：11

共 29 条

[1]

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