Comparison of observed CA XIX and CA XVIII relative line intensities with current theory

Details Comparison of observed CA XIX and CA XVIII relative line intensities with current theory Comparison of observed CA XIX and CA XVIII relative line intensities with current theory

May 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982soph...78..125j&link_type=abstract

Solar Physics, vol. 78, May 1982, p. 125-135.

Physics

17

Atomic Excitations, Calcium, Line Spectra, Solar Flares, Solar Spectra, Electron Energy, Helium, Lithium, Solar Maximum Mission, Temperature Dependence, Transition Probabilities

Scientific paper

A comparison is made between Ca XIX and Ca XVIII line ratios observed in solar flares with the bent crystal spectrometer on the Solar Maximum Mission satellite and currently available atomic data. Close agreement is found with the excitation rates recently published by Pradhan et al. (1981). The observations show little dependence of line ratios on electron temperature, supporting a further conclusion that cascade contributions to the 2 3P and 2 3S levels are not significant.

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