All Tables

Table 1: Fine structure levels and the relative energies of the target (core) ion Fe XXI in wavefunction expansion of Fe XX. The atomic structure calculations for the wavefunction employs spectroscopic set of configurations: 2s²2p², 2s2p³, 2p⁴, 2s²2p3s, 2s²2p3p, 2s²2p3d, 2s2p²3s, 2s2p²3p, 2s2p²3d, 2p³3s, and correlation configurations: 2p³3p, 2p³3d, 2p³4s, 2p³4p, 2p³4d, 2s²2p4s, 2s²2p4p, 2s²2p4d, 2s2p²4s, 2s2p²4p, 2s2p²4d, and the Thomas-Fermi scaling parameters for the orbitals: $\lambda _{nl} = 1.42$ (1s), 1.25(2s), 1.15(2p), 1.25(3s), 1.15(3p), 1.17(3d), -1.20(4s), -1.20(4p), -1.2(4d).
Table 2: Comparison of calculated BPRM absolute energies, $E_{\rm c}$ , with the observed ones, $E_{\rm o}$ , for Fe XX. I_J is the level index for calculated energy position in symmetry $J\pi$ . The asterisk next to a J-value indicates that the term has incomplete set of observed fine structure levels.
Table 3a: Sample table of fine structure energy levels of Fe XX as sets of LS term components. $C_{\rm t}$ is the core configuration, $\nu$ is the effective quantum number.
Table 3b: Sample table for calculated fine structure energy levels of Fe XX in $J\pi$ energy order. Nlv is the total number of levels of the symmetry.
Table 4: Sample set of f-, S and A-values for allowed E1 transitions in Fe XX in $J\pi$ order. $a \pm b$ means $a10^{\pm b}$ .
Table 5: Dipole allowed and intercombination transitions in Fe XX, corrected with the observed energies. The notation a(b) means $a\times 10^b$ .
Table 6: Comparison of present A-coefficients (in units os 10⁸ $\rm s^{-1}$ for Fe XX with those in NIST compilation. Notation a+b means $a\times 10^b$ .
Table 7: Sample set of fine strucuture levels of Fe XX and their relative energies for which forbidden transitions are considered. The configuration indices (Cf) correspond to $\rm 2s^22p^3$ (1), $\rm 2s2p^4$ (2), $\rm 2p^5$ (3), $\rm 2s^22p^23s$ (4), $\rm 2s^22p^23p$ (5), $\rm 2s^22p^23d$ (6), $\rm 2s2p^33s$ (7), $\rm 2s2p^33p$ (8), $\rm 2s2p^33d$ (9).
Table 8: Line strength (S) and A-coefficients for the forbidden electric quadrupole (E2) and octupole (E3), and magnetic dipole (M1) transitions in Fe XX. The level numbers (i, j) and configurations indices (C_i and C_j) correspond to those in Table 7, such as $\rm 2s^22p^3$ (1), $\rm 2s2p^4$ (2), $\rm 2p^5$ (3), $\rm 2s^22p^23s$ (4), $\rm 2s^22p^23p$ (5), etc.