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Title: Electron-density-sensitive Line Ratios of Fe XIII--XVI from Laboratory Sources Compared to CHIANTI

Abstract

We present electron-density-sensitive line ratios for Fe XIII–XVI measured in the spectral wavelength range of 200–440 Å and an electron density range of (1–4)×10 13 cm -3. The results provide a test at the high-density limit of density-sensitive line ratios useful for astrophysical studies. The measurements were performed on the National Spherical Torus Experiment-Upgrade, where electron densities were measured independently by the laser Thomson scattering diagnostic. Spectra were collected with a flat-field grazing-incidence spectrometer, which provided a spectral resolution of up to 0.3 Å, i.e., high resolution across the broad wavelength range. The response of the instrument was relatively calibrated using spectroscopic techniques in order to improve accuracy. The line ratios are compared to other laboratory sources and the latest version of CHIANTI (8.0.2), and an agreement within 30% is found.

Creator(s)/Author(s):
; ; ; ;
Publication Date:
DOE Contract Number:  
AC02-09CH11466
Product Type:
Dataset
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
U. S. Department of Energy
Keywords:
Spectroscopic techniques
OSTI Identifier:
1562038
DOI:
10.11578/1562038

Citation Formats

Weller, M E, Beiersdorfer, P, Soukhanovskii, V A, Scotti, F, and LeBlanc, B P. Electron-density-sensitive Line Ratios of Fe XIII--XVI from Laboratory Sources Compared to CHIANTI. United States: N. p., 2018. Web. doi:10.11578/1562038.
Weller, M E, Beiersdorfer, P, Soukhanovskii, V A, Scotti, F, & LeBlanc, B P. Electron-density-sensitive Line Ratios of Fe XIII--XVI from Laboratory Sources Compared to CHIANTI. United States. doi:10.11578/1562038.
Weller, M E, Beiersdorfer, P, Soukhanovskii, V A, Scotti, F, and LeBlanc, B P. 2018. "Electron-density-sensitive Line Ratios of Fe XIII--XVI from Laboratory Sources Compared to CHIANTI". United States. doi:10.11578/1562038. https://www.osti.gov/servlets/purl/1562038. Pub date:Thu Feb 01 00:00:00 EST 2018
@article{osti_1562038,
title = {Electron-density-sensitive Line Ratios of Fe XIII--XVI from Laboratory Sources Compared to CHIANTI},
author = {Weller, M E and Beiersdorfer, P and Soukhanovskii, V A and Scotti, F and LeBlanc, B P},
abstractNote = {We present electron-density-sensitive line ratios for Fe XIII–XVI measured in the spectral wavelength range of 200–440 Å and an electron density range of (1–4)×1013 cm-3. The results provide a test at the high-density limit of density-sensitive line ratios useful for astrophysical studies. The measurements were performed on the National Spherical Torus Experiment-Upgrade, where electron densities were measured independently by the laser Thomson scattering diagnostic. Spectra were collected with a flat-field grazing-incidence spectrometer, which provided a spectral resolution of up to 0.3 Å, i.e., high resolution across the broad wavelength range. The response of the instrument was relatively calibrated using spectroscopic techniques in order to improve accuracy. The line ratios are compared to other laboratory sources and the latest version of CHIANTI (8.0.2), and an agreement within 30% is found.},
doi = {10.11578/1562038},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {2}
}

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