Measurement of excitation functions and radiative lifetimes of oxygen ions

Details Measurement of excitation functions and radiative lifetimes of oxygen ions Measurement of excitation functions and radiative lifetimes of oxygen ions

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988zphyd...7..311m&link_type=abstract

Zeitschrift für Physik D Atoms, Molecules and Clusters, Volume 7, Issue 4, pp.311-318

Astronomy and Astrophysics

Astrophysics

1

34.50.He

Scientific paper

Oxygen ions from a 2 MV tandem accelerator have been used in beam-foil spectroscopic studies of O II, O III and O IV in the wavelength region 2000 5000 Å. Excitation functions for relative level populations in O II, O III and O IV in the incident energy range of 1.2 3.75 MeV have been measured and interpreted in terms of the independent electron model. Mean radiative lifetime measurements for a number of levels including cascades 4631 Å feeding to 2450 Å and 4344 Å feeding to 2385 Å in O IV have resulted in consistent values. Lifetime measurements for some of the O II levels of astrophysical interest have been reinvestigated and significant deviations from earlier values were observed.

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