Soft-electron background in x-ray telescopes using Wolter I grazing-incidence optics in near-Earth orbits

Timothy J. Sumner; R. Lieu

doi:10.1117/12.55724

1 October 1990 Soft-electron background in x-ray telescopes using Wolter I grazing-incidence optics in near-Earth orbits

Timothy J. Sumner, R. Lieu

Author Affiliations +

Optical Engineering, Vol. 29, Issue 10, (October 1990). https://doi.org/10.1117/12.55724

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.

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Timothy J. Sumner and R. Lieu "Soft-electron background in x-ray telescopes using Wolter I grazing-incidence optics in near-Earth orbits," Optical Engineering 29(10), (1 October 1990). https://doi.org/10.1117/12.55724

Published: 1 October 1990

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