Calculated Performance Of A Wolter Type I X-Ray Telescope Coated By Multilayers
| Autor: | W. A. Brown, R. A. Nobles, R. C. Catura, E. G. Joki |
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| Rok vydání: | 1982 |
| Předmět: | |
| Zdroj: | SPIE Proceedings. |
| ISSN: | 0277-786X |
| DOI: | 10.1117/12.933149 |
| Popis: | Deposition of multilayered diffraction coatings on the reflecting surfaces of a Wolter type I X-ray telescope offers the potential of using Bragg reflection to achieve enhanced effective area in selected high energy bandpasses. The structure of a gold-carbon multilayer has been optimized for study of 1.8A iron-line emission with an X-ray telescope designed for observations from Spacelab. The response of this mirror assembly has been calculated as a function of X-ray energy and the resulting effective area is enhanced by a factor of 10 and peaks at 160 cm2 with a bandpass of 0.4 keV FWHM. This enhanced response is sufficient to allow study of the angular distribution of iron-line emission from the 20 brightest cluster X-ray sources during a 7 day Spacelab mission. The possibility of achieving X-ray imaging in narrow bandpasses at even higher energies has been investigated. We conclude that it should be possible to achieve effective areas of approximately 5 cm in bandpasses ≈ 1 keV wide for energies in the 15-25 keV range, a spectral region of much importance during the impulsive phase of solar flares.© (1982) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only. |
| Databáze: | OpenAIRE |
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