CHOICE OF COATINGS FOR THE OPTICAL ELEMENTS IN THE IRRADIATION SYSTEM OF VACUUM-ULTRAVIOLET RADIATION ABOVE 50 nm |
| |
| Authors: | Kotaro Hidea Hiroshi Maezawa Atsushi Ito Katsumi Kobayashi Yoshiya Furusawa Takashi Ito |
| |
| Institution: | Biophysics Laboratory, Rikkyo University, Nishi-ikebukuro 3, Toshima-ku Tokyo 171, Japan;Department of Radiology, School of Medicine, Tokai University, Boseidai, Isehara, Kanagawa 259-11, Japan;Institute of Physics, College of Arts and Sciences, University of Tokyo, Komaba 3-8-1, Meguro-ku, Tokyo 153, Japan;Department of Biological Sciences, University of Tsukuba, Sakuramura, Ibaraki 305, Japan;Department of Molecular Biology, School of Medicine, Tokai University, Boseidai, Isehara, Kanagawa 259-11, Japan |
| |
| Abstract: | The spectral throughput of a vacuum-ultraviolet irradiation system at the SOR-RING facility was examined with various combinations of aluminum-and gold-coated optical elements in a 2.2-m modified Wadsworth monochromator. We found that the optimum was a combination of an aluminum-coated collimating mirror, concave grating, and plane deflecting mirror, and a combination of a gold-coated collimating mirror, concave grating and an aluminum-coated plane deflecting mirror in the wavelength regions 190-110 nm and 110-50 nm, respectively. |
| |
| Keywords: | |
|
|
