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Optical Engineering

Soft-electron background in x-ray telescopes using Wolter I grazing-incidence optics in near-Earth orbits
Author(s): Timothy J. Sumner; R. Lieu
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Paper Abstract

The background in x-ray telescopes in near-Earth orbits from low-energyelectrons (<100 keV) haslong been a sourceofconcern. Recent data on low-energy electron populations and improvements in the modeling of the propagation of low-energy electrons through Wolter I grazing- incidence optical systems now allow better quantitative estimates of the electron throughput of such systems. The modeling that has recently been done with respect to the U.K. soft x-ray telescope (Wide Field Camera) on ROSAT is described. The results from the modeling are then applied to several other missions using grazing-incidence optics, and the implications are discussed.

Paper Details

Date Published: 1 October 1990
PDF: 5 pages
Opt. Eng. 29(10) doi: 10.1117/12.55724
Published in: Optical Engineering Volume 29, Issue 10
Show Author Affiliations
Timothy J. Sumner, Imperial College of Science and Technology (United Kingdom)
R. Lieu, Imperial College of Science, Technology & Medicine (United Kingdom)

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