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Proceedings Paper

A Hard X-Ray Spectrometer For High Angular Resolution Observations Of Cosmic Sources
Author(s): C. J. Hailey; K. P. Ziock; F. Harrison; S. M. Kahn; D. Liedahl; P. M. Lubin; M. Seiffert
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Paper Abstract

LAXRIS (large area x-ray imaging spectrometer) is an experimental, balloon-borne, hard x-ray telescope that consists of a coaligned array of x-ray imaging spectrometer modules capable of obtaining high angular resolution (1-3 arcminutes) with moderate energy resolution in the 20- to 300-keV region. Each spectrometer module consists of a CsI(Na) crystal coupled to a position-sensitive phototube with a crossed-wire, resisitive readout. Imaging is provided by a coded aperture mask with a 4-m focal length. The high angular resolution is coupled with rather large area (-800 cm') to provide good sensitivity. Results are presented on performance and overall design. Sensitivity estimates are derived from a Monte-Carlo code developed to model the LAXRIS response to background encountered at balloon altitudes. We discuss a variety of observations made feasible by high angular resolution. For instance, spatially resolving the nonthermal x-ray emission from clusters of galaxies is suggested as an ideal program for LAXRIS.

Paper Details

Date Published: 21 December 1988
PDF: 6 pages
Proc. SPIE 0982, X-Ray Instrumentation in Astronomy II, (21 December 1988); doi: 10.1117/12.948698
Show Author Affiliations
C. J. Hailey, Lawrence Livermore National Laboratory (United States)
K. P. Ziock, Lawrence Livermore National Laboratory (United States)
F. Harrison, University of California (United States)
S. M. Kahn, University of California (United States)
D. Liedahl, University of California (United States)
P. M. Lubin, University of California (United States)
M. Seiffert, University of California (United States)

Published in SPIE Proceedings Vol. 0982:
X-Ray Instrumentation in Astronomy II
Leon Golub, Editor(s)

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