Tin–polyimide and indium–polyimide thin-film composites as soft x-ray bandpass filters

Autor: Powell, Stephen F., Allen, Maxwell J., Willis, Thomas D.
Zdroj: Applied Optics; September 1993, Vol. 32 Issue: 25 p4855-4859, 5p
Abstrakt: A tin–polyimide and an indium–polyimide soft x-ray bandpass filter were fabricated with thicknesses of 1400 and 1750 Å 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 ~40% for radiation with wavelengths between 60 and 80 Å. The transmission of the indium–polyimide filter was greater than 40% between 70 and 90 Å. The indium was ~5% more transmissive than the tin and attained a maximum transmission of ~48% at 76 Å. 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-Å water window.
Databáze: Supplemental Index