E1 Transitions between States with n = 1–6 in Helium‐like Carbon, Nitrogen, Oxygen, Neon, Silicon, and Argon

Abstract

Wavelengths and transition rates are given for E1 transitions between singlet3S,3P,3D, and1F states, between triplet3S,3P, and3D states, and between triplet3P1and singlet1S0states in ions of astrophysical interest: helium-like carbon, nitrogen, oxygen, neon, silicon, and argon. All possible El transitions between states with J ≤ 3 and n ≤ 6 are considered. Energy levels and wave functions used in calculations of the transition rates are obtained from relativistic configuration-interaction calculations that include both Coulomb and Breit interactions.