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The development and test of a deformable diffraction grating for a stigmatic EUV spectroheliometer

Author
Morgan, J. S.
Published
Mar 14, 1992.
Physical Description
1 electronic document
Additional Creators
Huber, M. C. E., Timothy, J. Gethyn, Walker, A. B. C., Jr., and Tondello, G.
Online Version

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Restrictions on Access
Unclassified, Unlimited, Publicly available.
Free-to-read Unrestricted online access
Summary
The objectives were to address currently unanswered fundamental questions concerning the fine scale structure of the chromosphere, transition region, and corona. The unique characteristics of the spectroheliometer was used in combination with plasma diagnostic techniques to study the temperature, density, and velocity structures of specific features in the solar outer atmosphere. A unified understanding was sought of the interplay between the time dependent geometry of the magnetic field structure and the associated flows of mass and energy, the key to which lies in the smallest spatial scales that are unobservable with current EUV instruments. Toroidal diffraction gratings were fabricated and tested by a new technique using an elastically deformable substrate. The toroidal diffraction gratings was procured and tested to be used for the evaluation of the Multi-Anode Microchannel Array (MAMA) detector systems for the Solar Ultraviolet Measurements of Emitted Radiation (SUMER) and UV Coronagraph Spectrometer (UVCS) instruments on the SOHO mission.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 19920011040.
Accession ID: 92N20282.
NAS 1.26:190128.
NASA-CR-190128.
Terms of Use and Reproduction
No Copyright.
View MARC record | catkey: 15676905