Theoretical simulations of emission spectra of Fe7+ and Fe8+

Details Theoretical simulations of emission spectra of Fe7+ and Fe8+ Theoretical simulations of emission spectra of Fe7+ and Fe8+

Jul 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006chphy..15.1502z&link_type=abstract

Chinese Physics, Volume 15, Issue 7, pp. 1502-1510 (2006).

Physics

2

Scientific paper

The energy levels, oscillator strengths, spontaneous radiative decay rates, and electron impact collision strengths are calculated for Fe VIII and Fe IX using the recently developed flexible atomic code (FAC). These atomic data are used to analyse the emission spectra of both laboratory and astrophysical plasmas. The nf 3d emission lines have been simulated for Fe VIII and Fe IX in a wavelength range of 6 14 nm. For Fe VIII, the predicted relative intensities of lines are insensitive to temperature. For Fe IX, however, the intensity ratios are very sensitive to temperature, implying that the information of temperature in the experiment can be inferred. Detailed line analyses have also been carried out in a wavelength range of 60 80 nm for Fe VIII, where the solar ultraviolet measurements of emitted radiation spectrometer records a large number of spectra. More lines can be identified with the aid of present atomic data. A complete dataset is available electronically from http://www.astrnomy.csdb.cn/EIE/.

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