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

Authors
BRESKIN A CHECHIK R GIBREKHTERMAN A FRUMKIN I LEVINSON L NOTEA A WEINGARTEN B
Citation
A. Breskin et al., SECONDARY-ELECTRON EMISSION GASEOUS DETECTORS FOR FAST X-RAY-IMAGING, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 353(1-3), 1994, pp. 302-306
Citations number
12
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
353
Issue
1-3
Year of publication
1994
Pages
302 - 306
Database
ISI
SICI code
0168-9002(1994)353:1-3<302:SEGDFF>2.0.ZU;2-T
Abstract
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 sec ondary electrons with a low-pressure avalanche wire chamber. Their mai n features are parallax-free imaging with a submillimeter spatial reso lution over a broad range of X-ray energies, a nanosecond response and a counting rate capability above 1 MHz/mm(2). The imaging characteris tics of a large area secondary electron emission (SEE) detector equipp ed 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 med ical film-screen combinations.