Calculated performance of a Wolter type I X-ray telescope coated by multilayersDeposition 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 1.8 A 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 sq cm 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. It is concluded that it should be possible to achieve effective areas of approximately 5 sq cm in bandpasses approximately 1 keV wide for energies in the 15-25 keV range, a spectral region of much importance during the impulsive phase of solar flares.
Document ID
19830031510
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Catura, R. C. (Lockheed Missiles and Space Co. Palo Alto, CA, United States)
Brown, W. A. (Lockheed Missiles and Space Co. Palo Alto, CA, United States)
Joki, E. G. (Lockheed Missiles and Space Co. Palo Alto, CA, United States)
Nobles, R. A. (Lockheed Research Laboratories Palo Alto, CA, United States)