Radiative parameters for some transitions in the spectrum of AgII

Details Radiative parameters for some transitions in the spectrum of AgII Radiative parameters for some transitions in the spectrum of AgII

Nov 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005mnras.363..905c&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 363, Issue 3, pp. 905-910.

Astronomy and Astrophysics

Astronomy

4

Atomic Data, Line: Identification, Methods: Analytical, Techniques: Spectroscopic, Stars: General

Scientific paper

Radiative parameters for transitions depopulating the levels belonging to the 4d85s2, 4d96s and 4d95d configurations of AgII have been obtained from a combination of theoretical lifetimes and experimental branching fractions. On the experimental side, a laser-produced plasma was used as a source of Ag+ ions. The light emitted by the plasma was analysed by a grating monochromator coupled with a time-resolved optical multichannel analyser system. Spectral response calibration of the experimental system was performed using a deuterium lamp in the wavelength range from 200 to 400 nm, and a standard tungsten lamp in the range from 350 to 600 nm. The transition probabilities were obtained from measured branching ratios and theoretical radiative lifetimes of the corresponding states calculated with a relativistic Hartree-Fock approach including core-polarization effects and configuration interaction in an extensive way. Theoretical and experimental data have been compared and the new data have also been compared with the few previous results available in the literature.

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