Physics – Optics
Scientific paper
Sep 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apopt..32.4855p&link_type=abstract
Applied Optics (ISSN 0003-6935), vol. 32, no. 25, p. 4855-4859.
Physics
Optics
Bandpass Filters, Composite Materials, Polyimides, Polymeric Films, X Ray Absorption, Fabrication, Indium, Tin, X Ray Telescopes
Scientific paper
A tin-polyimide and an indium-polyimide soft X-ray bandpass filter were fabricated with thicknesses of 1400 and 1750 A for the metal and polyimide components, respectively. The transmission of each filter was measured at the Stanford Synchrotron Radiation Laboratory. The transmission of the tin-polyimide filter was found to be about 40 percent for radiation with wavelengths between 60 and 80 A. The transmission of the indium-polyimide filter was greater than 40 percent between 70 and 90 A. The indium was about 5 percent more transmissive than the tin and attained a maximum transmission of about 48 percent at 76 A. Such filters have potential applications to soft X-ray telescopes that operate in this region. They might also be of interest to investigators who work with X-ray microscopes that image live biological specimens in the 23-44-A water window.
Allen Maxwell J.
Powell Stephen F.
Willis Thomas D.
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