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Proceedings Paper

Calibration of the AXAF-HRC UV/ion shields at Osservatorio Astronomico di Palermo G.S. Vaiana: II - x-ray transmission measurements
Author(s): Alfonso Collura; Marco Barbera; Alessandro Dara; Salvatore Serio; Martin V. Zombeck
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Paper Abstract

X-ray transmission measurements have been conducted at the XACT facility on baseline design AXAF-HRC UV/ion shield using an electron impact x-ray source, a transmission grating monochromator and gas flow proportional counters. Transmission has been measured at several energies in the range 0.1 - 2.0 keV with and without the transmission grating monochromator. It turns out that the monochromator enormously improves the measurement accuracy. UV measurements conducted by us on the same shield and reported elsewhere showed an unexpectedly high UV transmission which led to a redesign of the UV/ion shields. Calibration of the new shields, based on different materials, is still in progress. In this paper we outline the calibration procedure and the data analysis technique, and report transmission results on the baseline design shield.

Paper Details

Date Published: 31 October 1996
PDF: 10 pages
Proc. SPIE 2808, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VII, (31 October 1996); doi: 10.1117/12.255989
Show Author Affiliations
Alfonso Collura, CNR Istituto per le Applicazioni Interdisciplinari della Fisica (Italy)
Marco Barbera, Istituto e Osservatorio Astronomico G.S. Vaiana (Italy)
Alessandro Dara, Istituto e Osservatorio Astronomico G.S. Vaiana (Italy)
Salvatore Serio, Istituto e Osservatorio Astronomico G.S. Vaiana (Italy)
Martin V. Zombeck, Smithsonian Astrophysical Observatory (United States)

Published in SPIE Proceedings Vol. 2808:
EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VII
Oswald H. W. Siegmund; Mark A. Gummin, Editor(s)

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