Performance of transmission filters for EUV and soft x-ray astronomy

Marcos Bavdaz; Anthony J. Peacock; Roland H. den Hartog; Abel Poelaert; Peter J. Underwood; Veli-Pekka Viitanen; Detlef Fuchs; Peter Bulicke; Stefan Kraft; Frank Scholze; Gerhard Ulm; Annesley C. Wright

doi:10.1117/12.256004

31 October 1996 Performance of transmission filters for EUV and soft x-ray astronomy

Marcos Bavdaz, Anthony J. Peacock, Roland H. den Hartog, Abel Poelaert, Peter J. Underwood, Veli-Pekka Viitanen, Detlef Fuchs, Peter Bulicke, Stefan Kraft, Frank Scholze, Gerhard Ulm, Annesley C. Wright

Author Affiliations +

Proceedings Volume 2808, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VII; (1996) https://doi.org/10.1117/12.256004
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

Soft x-ray detectors for astronomical applications are often also sensitive to visible and UV photons. Filters of a new design have been developed, which could be used in future missions to suppress the flooding of x-ray detectors by low energy photons. Three series of filters are discussed: aluminum/silicon multilayers, Niobium and calcium/boron multilayers. The filters are typically 100 to 200 nm thick and reject the IR/visible/UV from 10^-4 to 10^-6. The transmission for soft x-rays is above 10% for wavelengths less than 30 nm, when combining the bandpasses of at least two filters. The optimum transmission band depends very much on the filter type. The IR/visible/UV has been measured using standard laboratory spectro- photometers while the x-ray transmission characteristics have been determined using synchrotron radiation.

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Marcos Bavdaz, Anthony J. Peacock, Roland H. den Hartog, Abel Poelaert, Peter J. Underwood, Veli-Pekka Viitanen, Detlef Fuchs, Peter Bulicke, Stefan Kraft, Frank Scholze, Gerhard Ulm, and Annesley C. Wright "Performance of transmission filters for EUV and soft x-ray astronomy", Proc. SPIE 2808, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VII, (31 October 1996); https://doi.org/10.1117/12.256004

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