Development of a balloonborne hard x-ray telescope using multilayer supermirror

Details Development of a balloonborne hard x-ray telescope using multilayer supermirror Development of a balloonborne hard x-ray telescope using multilayer supermirror

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000spie.4138..111t&link_type=abstract

Proc. SPIE Vol. 4138, p. 111-119, X-Ray Optics, Instruments, and Missions IV, Richard B. Hoover; Arthur B. Walker; Eds.

Physics

Optics

1

Scientific paper

We have been developing high throughput X-ray telescope for hard X-ray region (20 - 40 keV) using Pt/C multilayer supermirrors for balloon borne experiment launched in 2001 June. The Walter type I telescope consists of about 2,000 supermirrors coated on very thin (150 micrometer) aluminum foils. We started mass production of the supermirror reflectors. Two different method is used for fabrication process. One is multilayer deposition on the platinum replica foil, and the other is direct replication of supermirror. The performance of the supermirrors are measured in X-ray beam line in Nagoya University and synchrotron radiation facility SPring-8. We obtained 30% reflectivity at 30 keV, corresponding to 0.35 nm interfacial roughness by Debye-Waller factor. The performance of multilayer supermirrors indicate that we can achieve about 100 cm2 effective area for a telescope.

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