Excitation energies, radiative and autoionization rates, dielectronic satellite lines, and dielectronic recombination rates for excited states of Na-like W from Ne-like W |
| |
Authors: | UI Safronova AS Safronova |
| |
Affiliation: | a Physics Department, University of Nevada, Reno, NV 89557, USA b Lawrence Livermore National Laboratory, Livermore, CA 94550, USA |
| |
Abstract: | Energy levels, radiative transition probabilities, and autoionization rates for and states in Na-like tungsten (W63+) are calculated. Cowan’s relativistic Hartree-Fock method, the relativistic multiconfiguration method implemented in the Hebrew University Lawrence Livermore Atomic Code, and the relativistic many-body perturbation theory method, are used. Autoionizing levels above the threshold 1s22s22p6 are considered. It is found that configuration mixing plays an important role for all atomic characteristics. Also strong mixing between states with 2s and 2p holes (1s22s22p53l1nl2+1s22s2p63l3nl4) occurs. Branching ratios relative to the first threshold and intensity factors are calculated for satellite lines, and dielectronic recombination (DR) rate coefficients are determined for the excited states. It is shown that the contribution of the highly excited states is very important for calculation of total DR rates. Contributions from the autoionizing states and to the DR rate coefficients are estimated by extrapolation of all atomic parameters. The orbital angular momentum (l) distribution of the rate coefficients shows a peak at l=2. The total DR rate coefficient is derived as a function of electron temperature. The dielectronic satellite spectra of W63+ are important for L-shell diagnostics of very high-temperature laboratory plasmas such as future ITER fusion plasmas. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|