Multiconfiguration Dirac-Hartree-Fock energy levels and transition probabilities for 3d^5 in Fe IV

Abstract

Multiconfiguration Dirac-Hartree-Fock electric quadrupole (E2) and magnetic dipole (M1) transition probabilities are reported for transitions between levels of 3d^5 in [Fe IV]. The accuracy of the ab initio energy levels and the agreement in the length and velocity forms of the line strength for the E2 transitions are used as indicators of accuracy. The present E2 and M1 transition probabilities are compared with earlier Breit-Pauli results and other theories. An extensive set of transition probabilites with indicators of accuracy are reported in Appendices A and B. Recommended values of A(E2) + A(M1) are listed in Appendix C.

16 pages, three appendices containing accuracy indicators and recommended values for E2 and M1 transition rates

References in corpus (3)

• The [Fe IV] Discrepancy: Constraining the Iron Abundances in Nebulae
• Integrated spectrum of the planetary nebula NGC 7027
• Evidence for binarity in the bipolar planetary nebulae A79, He2-428 and M1-91

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