Atomic calculations for CA XVII - UV and X-ray lines

Details Atomic calculations for CA XVII - UV and X-ray lines Atomic calculations for CA XVII - UV and X-ray lines

Apr 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26as...52..115b&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 52, April 1983, p. 115-124. Research supported by the U.S. D

Astronomy and Astrophysics

Astrophysics

12

Atomic Spectra, Calcium, Electron Transitions, Solar Spectra, Solar X-Rays, Ultraviolet Spectra, Atomic Energy Levels, Atomic Structure, Line Spectra, Particle Collisions, Solar Flares

Scientific paper

Doschek et al. (1977) have pointed out the importance of the Ca XVII UV lines as an electron density diagnostic. Energy levels, transition probabilities, and collision strengths, are presently obtained for the 2s2, 2s 2p, 2p2, 2s 3s, 2s 3p, and 2s 3d configurations of Ca XVII, and the theoretical intensity ratios for the UV and X-ray lines are compared with observed intensities in solar flare spectra. Inconsistencies are indicated in the analysis of UV data, and discrepancies between observed and theoretical intensity ratios indicate that further studies are required. New identifications are suggested in the X-ray wavelength region.

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