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Proceedings Paper

A Large Area Imaging Gas Scintillation Proportional Counter For Use In X-Ray Astronomy
Author(s): William H. M. Ku; Kenneth S. Lum; Michael H. Vartanian
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Paper Abstract

A large area (200 cm2), broad bandwidth (0.1-70 keV), imaging gas scintillation proportional counter (IGSPC) has been constructed for use in X-ray astronomy. The IGSPC consists of a high pressure xenon gas scintillation proportional counter (GSPC) coupled to a multi-wire proportional counter (MWPC) via a calcium fluoride window. The MWPC, filled with a mixture of argon, methane, and tetrakis (dimethylamino) ethylene, detects the UV photons emitted by the xenon gas in the GSPC. The detector has a measured energy resolution of 8.0% (FWHM) and 4.3% (FWHM) at 5.9 keV and 22.1 keV, respectively. The predicted spatial resolution of the detector is <1 mm (FWHM) between 3-22 keV and 37-60 keV. A method to determine the three-dimensional location of detected X-rays is described. In addition, we discuss a combination of discrimination schemes designed to reduce the non-X-ray background in the IGSPC by more than two orders of magnitude.

Paper Details

Date Published: 9 January 1984
PDF: 10 pages
Proc. SPIE 0445, Instrumentation in Astronomy V, (9 January 1984); doi: 10.1117/12.966169
Show Author Affiliations
William H. M. Ku, Columbia University (United States)
Kenneth S. Lum, Columbia University (United States)
Michael H. Vartanian, Columbia University (United States)


Published in SPIE Proceedings Vol. 0445:
Instrumentation in Astronomy V
Alec Boksenberg; David L. Crawford, Editor(s)

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