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Proceedings Paper

High-resolution EUV spectroscopy: performance of spherical multilayer-coated gratings operated at near normal incidence
Author(s): Michael P. Kowalski; John F. Seely; Raymond G. Cruddace; Jack C. Rife; Charles M. Brown; George A. Doschek; Uri Feldman; Troy W. Barbee; William R. Hunter; Glenn E. Holland; Craig Nelson Boyer
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Paper Abstract

A program is underway at the Naval Research Laboratory (NRL) to develop a high-resolution spectrometer for the study of astrophysical sources at EUV/soft X-ray wavelengths. The spectrometer design is simple in that the sole optic is a multilayer-coated spherical grating or mosaic of co-aligned gratings used at near-normal incidence, allowing large effective collecting area without the strict tolerance requirements of grazing incidence optics. Therefore, both high resolution and high throughput can be obtained over several selected narrow bandpasses. We present efficiency and resolving power measurements of spherical gratings which have parameters similar to that intended for our flight instrument. Two gratings were replicated from the same ruled master and then coated with a multilayer of molybdenum and silicon. A third sister grating was used as a control and overcoated with gold.

Paper Details

Date Published: 1 November 1993
PDF: 12 pages
Proc. SPIE 1945, Space Astronomical Telescopes and Instruments II, (1 November 1993); doi: 10.1117/12.158759
Show Author Affiliations
Michael P. Kowalski, Naval Research Lab. (United States)
John F. Seely, Naval Research Lab. (United States)
Raymond G. Cruddace, Naval Research Lab. (United States)
Jack C. Rife, Naval Research Lab. (United States)
Charles M. Brown, Naval Research Lab. (United States)
George A. Doschek, Naval Research Lab. (United States)
Uri Feldman, Naval Research Lab. (United States)
Troy W. Barbee, Lawrence Livermore National Lab. (United States)
William R. Hunter, SFA, Inc. (United States)
Glenn E. Holland, SFA, Inc. (United States)
Craig Nelson Boyer, USRA (United States)


Published in SPIE Proceedings Vol. 1945:
Space Astronomical Telescopes and Instruments II
Pierre Y. Bely; James B. Breckinridge, Editor(s)

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