1. Design and Fabrication of Multilayer Mirrors for He-II Radiation.
- Author
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Hotta, Yoshifumi, Furudate, Minaji, Yamamoto, Masaki, and Watanabe, Makoto
- Subjects
- *
RADIATION , *HELIUM , *MIRRORS - Abstract
Design, fabrication, and reflectance evaluation of multilayer mirrors for He-II radiation are described. Based on the available complex refractive indices of materials at the wavelength of 30.4 nm, Mg, Al, Si, Cr, and C were selected as small absorption material to be paired. Mo/Si and Sc found in previous works were also included. In referring to optimum design for the highest reflectance, multilayers of Al/Mg, Au/Mg, C/Mg, Sc/Mg, C/Si, Al/C, and Mo/Si-were fabricated by ion-beam sputtering. The highest reflectance of 27% was observed by a 15-period Mg/Sc mirror. [ABSTRACT FROM AUTHOR]
- Published
- 2002
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