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Title: X-ray and Extreme Ultraviolet Spectroscopy on DIII-D

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Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
OSTI Identifier:
Report Number(s):
Journal ID: ISSN 1748--0221
DOE Contract Number:
Resource Type:
Resource Relation:
Journal Volume: 12; Journal Issue: 06; Conference: Presented at: European Conference on Plasma Diagnostics, Bordeaux, France, Apr 18 - Apr 21, 2017
Country of Publication:
United States

Citation Formats

Victor, B S, Allen, S L, Beiersdorfer, P, and Magee, E W. X-ray and Extreme Ultraviolet Spectroscopy on DIII-D. United States: N. p., 2017. Web. doi:10.1088/1748-0221/12/06/C06011.
Victor, B S, Allen, S L, Beiersdorfer, P, & Magee, E W. X-ray and Extreme Ultraviolet Spectroscopy on DIII-D. United States. doi:10.1088/1748-0221/12/06/C06011.
Victor, B S, Allen, S L, Beiersdorfer, P, and Magee, E W. 2017. "X-ray and Extreme Ultraviolet Spectroscopy on DIII-D". United States. doi:10.1088/1748-0221/12/06/C06011.
title = {X-ray and Extreme Ultraviolet Spectroscopy on DIII-D},
author = {Victor, B S and Allen, S L and Beiersdorfer, P and Magee, E W},
abstractNote = {},
doi = {10.1088/1748-0221/12/06/C06011},
journal = {},
number = 06,
volume = 12,
place = {United States},
year = 2017,
month = 5

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  • We have performed an absolute intensity calibration of a SPRED multichannel EUV spectrograph using synchrotron radiation from the NBS SURF-II electron storage ring. The calibration procedure and results for both a survey grating (450 g/mm) and a high-resolution (2100 g/mm) grating are presented. The spectrograph is currently in use on the DIII-D tokamak with a tangential line-of-sight at the plasma midplane. Data is first acquired and processed by a microcomputer; the absolute line intensities are then sent to the DIII-D database for comparison with data from other diagnostics. Representative data from DIII-D plasma operations will be presented. 6 refs., 3more » figs., 1 tab.« less
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  • The Seyfert 1 galaxy Mrk 478, observed during the EUVE all-sky survey, is the brightest EUV source among its class. The SW spectrum of this object shows evidence of discrete emission, although this interpretation is tentative, since the source spectrum must be extracted against a bright background. If the EUV flux is, in fact, composed partly of line emission, the authors attribute the discrete structure to emission from a collision-driven plasma at temperatures {approx_gt} 10{sup 6} K. In this context, they discuss some of the constraints imposed on the emission-line region by this observation.
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