The spectrum of NI XIX in the solar corona

Details The spectrum of NI XIX in the solar corona The spectrum of NI XIX in the solar corona

Jan 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976soph...46..171h&link_type=abstract

Solar Physics, vol. 46, Jan. 1976, p. 171-177.

Physics

7

Electronic Spectra, Nickel, Solar Corona, Solar Spectra, Spectrum Analysis, X Ray Spectra, Abundance, Atomic Energy Levels, Electron Transitions, Iron, Line Spectra

Scientific paper

The wavelengths and intensities of the stronger transitions in the spectrum of Ni XIX are reduced from measurements of the X-ray spectra of three coronal active regions. The measured wavelengths are consistent with prediction by isoelectronic extrapolation from the wavelengths of well-established transitions, but are about 0.01 A longer than previously accepted laboratory measurements. This difference appears to be crucial in the correct assignment of features in the coronal spectrum to Ni XIX. The relative intensities of the present assignments to Ni XIX are in broad agreement with the Loulergue-Nussbaumer (1975) calculations.

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