Radiative lifetime measurements and transition probabilities of astrophysical interest in Eriii

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astrochemistry, Atomic Data, Atomic Processes, Methods: Analytical, Techniques: Spectroscopic, Stars: Chemically Peculiar, Astrochemistry, Atomic Data, Atomic Processes, Methods: Analytical, Techniques: Spectroscopic, Stars: Chemically Peculiar

Scientific paper

Radiative lifetimes of seven excited states of Eriii have been measured using time-resolved laser-induced fluorescence following two-photon excitation. Relativistic Hartree-Fock calculations taking core-polarization effects into account are found to be in excellent agreement with the experimental results. A large set of new calculated transition probabilities is presented for many transitions of astrophysical interest. These results will be useful for investigating the composition of chemically peculiar stars.

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