Abstract

We have developed narrow-bandpass MoSi/Si multilayer mirrors for a Japanese sounding-rocket program. A high spectral resolution λ/Δλ exceeding 40 was achieved by a two-mirror telescope with a multilayer coating. The single telescope had two bandpasses in the extreme-UV range for detecting a coronal high-velocity flow; the wavelength at peak reflectance (hereafter peak wavelength) in one of the bandpasses was 210.2 Å, situated on the blue side of the target’s Fe xiv 211.3-Å coronal emission line, and the peak wavelength in the other was 213.3 Å on the red side. A high uniformity in a peak wavelength of less than 1 Å was achieved over a primary (secondary) mirror surface 158 (96) mm in diameter. The ratio of the reflectance for the Fe xiv line at 211 Å to that for an intense He ii line as a contaminant at 304 Å in the telescope system became 2 × 105 owing to a wave trap consisting of a single Si layer on the MoSi/Si multilayer. The narrow-bandpass (∼5-Å) telescope was launched on 31 January 1998 by sounding rocket S520CN-22, and images of the whole-Sun corona at Fe xiv 211 Å were successfully obtained.

© 1999 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
High-wavelength-resolution extreme-ultraviolet multilayer mirror

Shin’ichi Nagata, Saku Tsuneta, Taro Sakao, Tsuyoshi Yoshida, Hirohisa Hara, Ryouhei Kano, Wakana Ishiyama, Katsuhiko Murakami, and Masayuki Ohtan
Appl. Opt. 36(13) 2830-2838 (1997)

Advanced materials for multilayer mirrors for extreme ultraviolet solar astronomy

S. A. Bogachev, N. I. Chkhalo, S. V. Kuzin, D. E. Pariev, V. N. Polkovnikov, N. N. Salashchenko, S. V. Shestov, and S. Y. Zuev
Appl. Opt. 55(9) 2126-2135 (2016)

Experimental comparison of extreme-ultraviolet multilayers for solar physics

David L. Windt, Soizik Donguy, John Seely, and Benjawan Kjornrattanawanich
Appl. Opt. 43(9) 1835-1848 (2004)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (11)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (6)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (3)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription