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Author(s):
I. Murakami, U. I. Safronova and T. Kato
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Title:
Dielectronic Recombination Rate Coefficients to Excited States of Be-like Oxygen
Date of publication:
May 2001
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Key words:
Be-like oxygen, dielectronic recombinatin rate coefficients, state selective rate coefficients, satellite lines
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Abstract:
We have calculated energy levels, radiative transition probabilities, and autoionizatin rate for Be-like oxygen (O^{4+}) including 1s{^2} 2lnl' (n = 2 - 8, l /leq n - 1) and 1s^2 3l'nl (n = 3 - 6, l leq n - 1) states by multi configurational Hartree-Fock method (Cowan code) and perturbation theory Z-expansion method (MZ code). The state selective dielectronic recombination rate coefficients to excited states of Be-like O ions are obtained. Configuration mixing plays an important role for the principal quantum number n distribution of the dielectronic recombination rate coefficients for 2snl (n /leq 5) levels at low electron temperature. The orbital angular momentum quantum number l distribution of the rate coefficients shows a peak at l = 4. The total dielectronic recombination rate coefficient is derived as a function of electron temperature.
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