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- W2000647142 abstract "Electron impact collision strengths and spontaneous radiative decay rates are calculated for Fe XVII. The data pertain to the 73 levels of the configurations, 2s22p6, 2s22p53s, 2s22p53p 2s22p53d, 2s2p63s, 2s2p63p, 2s2p63d, 2s22p54s, 2s22p54p, 2s22p54d, 2s2p64s, 2s2p64p, and 2s2p64d. Collision strengths are calculated at 11 incident electron energies: 58.5, 65.0, 70.0, 76.0, 85.0, 127.5, 170.0, 212.5, 255.0, 340.0, and 425.0 Ry. This work is an improvement over our earlier work on Fe XVII in two respects: (1) configurations involving 4s, 4p, and 4d electrons have been added and (2) a broader range of incident electron energies is used in the computation of collision strengths and excitation rate coefficients. Relative spectral line intensities are calculated for astrophysically important transitions. These are obtained by computing the excitation rate coefficients (cm3 s−1), i.e., the collision strengths integrated over a Maxwellian electron distribution, and then solving the equations of detailed balance for the populations of the 73 energy levels, assuming a collisional excitation model and an electron temperature of 4 × 106 K. This temperature is typical for Fe XVII when formed in equilibrium by collisional ionization and recombination. Using the excitation rate coefficients and the radiative decay rates, level populations are computed for five electron densities and are given in this paper." @default.
- W2000647142 created "2016-06-24" @default.
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- W2000647142 date "2003-09-01" @default.
- W2000647142 modified "2023-10-16" @default.
- W2000647142 title "Atomic data and spectral line intensities for Fe XVII" @default.
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- W2000647142 doi "https://doi.org/10.1016/s0092-640x(02)00018-9" @default.
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