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High Resolution EUV & Soft X-Ray Spectrometers Using Variable Groove Spacings

Published online by Cambridge University Press:  12 April 2016

M. Lampton ,
M.C Hettrick  and
S. Bowyer
M. Lampton
Affiliation:
Space Sciences Laboratory, University of California Berkeley CA 94720, USA
M.C Hettrick
Affiliation:
Space Sciences Laboratory, University of California Berkeley CA 94720, USA
S. Bowyer
Affiliation:
Space Sciences Laboratory, University of California Berkeley CA 94720, USA

Extract

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Spectroscopic analysis is a powerful technique for the diagnosis of temperatures and compositions of astrophysical plasmas. The EUV (100–1000Å) and soft x-ray (10–100Å) bands contain hundreds of potentially useful diagnostic lines. Unfortunately, traditional types of grating spectrometer become inefficient or unwieldy when adapted to stellar spectroscopy onboard a spacecraft. At grazing incidence, the required length of a high-resolution plane-grating spectrometer can easily exceed the length of the telescope feeding it. For these reasons, we have systematically explored ways to introduce a reflection grating into the converging beam formed by a given objective optical system ahead of its first focus. A spectrometer of this type results in an optical train no longer than the telescope’s existing prime-focus beam.

Type
Session 3. Non-Solar Astrophysics
Information
International Astronomical Union Colloquium , Volume 86: Eighth International Colloquium on Ultraviolet and X-ray Spectroscopy of Astrophysical and Laboratory Plasmas , 1984 , pp. 84 - 87
Copyright
Copyright © Naval Research Laboratory 1984. Publication courtesy of the Naval Research Laboratory, Washington, DC.

References

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