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Optical Engineering

Gas ionization solar spectral monitor
Author(s): James S. Vickers; Daniel M. Cotton; Timothy A. Cook; Supriya Chakrabarti
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Paper Abstract

We are currently developing an instrument free from optical components to measure the full-disk solar spectrum in the extreme-ultraviolet (EUV) regime covering wavelengths from 75 to 400Å. The instrument consists of a windowless noble gas ionization cell followed by a toroidal electrostatic analyzer to spatially disperse photoelectrons as a function of their energies. A microchannel plate based position sensitive detector is used to detect individual electrons, indirectly returning the solar EUV spectrum. The instrument was launched aboard a NASA Black Brant sounding rocket on October 27, 1992. Power to this instrument was lost early in the flight, however, and a reflight is planned for October 1993. Calibration results for the He II 304-Å line are presented.

Paper Details

Date Published: 1 December 1993
PDF: 7 pages
Opt. Eng. 32(12) doi: 10.1117/12.155597
Published in: Optical Engineering Volume 32, Issue 12
Show Author Affiliations
James S. Vickers, Univ. of California/Berkeley (United States)
Daniel M. Cotton, Boston Univ. (United States)
Timothy A. Cook, Boston Univ. (United States)
Supriya Chakrabarti, Boston Univ. (United States)


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