Measurement of relative oscillator strengths for CR I lines. II - Measures for transitions from levels with excitation energy 2.54-3.46 eV

Details Measurement of relative oscillator strengths for CR I lines. II - Measures for transitions from levels with excitation energy 2.54-3.46 eV Measurement of relative oscillator strengths for CR I lines. II - Measures for transitions from levels with excitation energy 2.54-3.46 eV

May 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.220..303b&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 220, May 15, 1986, p. 303-312. Research supported by th

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23

Atomic Excitations, Atomic Spectra, Chromium, Line Spectra, Oscillator Strengths, Electrophotometry, Temperature Measurement, Wavelengths

Scientific paper

Relative oscillator strengths for 53 lines of Cr I, with excitation energies between 2.54 and 3.46 eV, have been measured using the Oxford spectroscopic furnace. The oscillator strengths for lines in the region of 2.5 eV have been placed on an absolute scale by comparison with 1 eV Cr I lines through temperatures measured using photoelectric pyrometry. The lifetime measurements by Kwiatowski et al. have also been used. The two methods agree to better than 1 per cent. This absolute scale has been extended to lines of excitation 3.5 eV using photoelectric pyrometry. The accuracy of relative oscillator strengths within this range of excitation is about 1 per cent, whilst that of the absolute scale is about 7 per cent. Comparison is made with the experimental results and calculations of other authors.

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