Relativistic collision strengths for optically allowed {Delta}{ital n}=0 transitions between magnetic sublevels of highly charged ions

Journal Article · Tue Oct 31 23:00:00 EST 1995 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.52.3827· OSTI ID:132901

Zhang, H L; Sampson, D H ^[1]

---

1. Department of Astronomy and Astrophysics, The Pennsylvania State University, University Park, Pennsylvania 16802 (United States)

Procedures are given for calculating relativistic distorted-wave collision strengths for producing optically allowed {Delta}{ital n}=0 transitions between magnetic sublevels of highly charged ions by impact with directional electrons. For such transitions, which tend to have very small transition energies, difficulties arise because the contribution from extremely large angular momenta of the free electron is important. Illustrative numerical results are given for He-like ions, which have been of interest for electron-beam ion-trap experiments [Wargelin {ital et} {ital al}., Phys. Rev. Lett. {bold 71}, 2196 (1993)].

• OSTI ID: 132901
• Journal Information: Physical Review A, Journal Name: Physical Review A Journal Issue: 5 Vol. 52; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANGULAR MOMENTUM
BORN APPROXIMATION
CHARGED PARTICLES
DISTORTED WAVE THEORY
ELECTRON-ION COLLISIONS
ELECTRONS
HELIUM IONS
TRAPS