Skip navigation
Please use this identifier to cite or link to this item:
Title: Electron-density-sensitive Line Ratios of Fe XIII--XVI from Laboratory Sources Compared to CHIANTI
Contributors: Weller, M.E.
Beiersdorfer, P.
Soukhanovskii, V.A.
Scotti, F.
LeBlanc, B.P.
U. S. Department of Energy contract number DE-AC02-09CH11466
Keywords: Atomic data
Stars: Flares
Stars: Ultraviolet
Sun: UV radiation
Spectroscopic techniques
Issue Date: Feb-2018
Publisher: Princeton Plasma Physics Laboratory, Princeton University
Related Publication: ApJ vol. 854 p. 102 (February 2018)
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.
Referenced By:
Appears in Collections:NSTX

Files in This Item:
File Description SizeFormat 
ARK_DATA.zip56.5 kBUnknownView/Download
readme.txt7.75 kBTextView/Download

Items in Dataspace are protected by copyright, with all rights reserved, unless otherwise indicated.