SECONDARY-ELECTRON EMISSION GASEOUS DETECTORS FOR FAST X-RAY-IMAGING

被引:8
|
作者
BRESKIN, A [1 ]
CHECHIK, R [1 ]
GIBREKHTERMAN, A [1 ]
FRUMKIN, I [1 ]
LEVINSON, L [1 ]
NOTEA, A [1 ]
WEINGARTEN, B [1 ]
机构
[1] TECHNION ISRAEL INST TECHNOL,DEPT QUAL ASSURANCE & RELIABIL,IL-32000 HAIFA,ISRAEL
来源
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1994年 / 353卷 / 1-3期
关键词
D O I
10.1016/0168-9002(94)91662-4
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
A new class of X-ray imaging gaseous detectors was developed, based on photon conversion in a thin film and the detection of the emitted secondary electrons with a low-pressure avalanche wire chamber. Their main features are parallax-free imaging with a submillimeter spatial resolution over a broad range of X-ray energies, a nanosecond response and a counting rate capability above 1 MHz/mm(2). The imaging characteristics of a large area secondary electron emission (SEE) detector equipped with CsI, Ag and Ta photoconvertors, in the photon energy range of 6-60 keV are summarized. In localization capability this detector can successfully compete with commercial image intensifier systems and medical film-screen combinations.
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页码:302 / 306
页数:5
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