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1 November 1990 Soft x-ray windows for position-sensitive proportional counters
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Abstract
Methods to make ultrathin low-leak X-ray entrance windows, which can withstand atniospheric pressures, have been developed. The first prototype windows have been 6 mm or 20 mm diameter windows with film thicknesses 0.5 m - 2.5 jm of polyimide and 40 ma - 100 nm of aluminium. Also 1 m thick beryllium windows with diameter 6 mm have been made. Our goal is to fabricate 140 mm diameter windows for Danish-Finnish position sensitive proportional counters to be flown on the Spviet SPECTRUM-X-GAMMA satellite.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Seppo Arvo Anter Nenonen, Heikki Sipila, P. Jalas, and Risto Mutikainen "Soft x-ray windows for position-sensitive proportional counters", Proc. SPIE 1344, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy, (1 November 1990); https://doi.org/10.1117/12.23280
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