Dielectronic recombination for C VI, and O VII, VII

Journal Article · Fri Dec 15 00:00:00 EST 1989 · Physical Review (Section) A: General Physics; (USA)

DOI:https://doi.org/10.1103/PhysRevA.40.6913· OSTI ID:7017622

Bellantone, R; Hahn, Y ^[1]

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1. Department of Physics, University of Connecticut, Storrs, Connecticut 06269 (US)

Dielectronic recombination (DR) cross sections and rate coefficients for the H-like and He-like C and O ions are calculated in the zero-field, zero-density limit. The peak rates are approximately (1.2--1.6){times}10{sup {minus}12} cm{sup 3}/sec for all four ions. For the H-like ions, the contribution to total rates from high Rydberg states ({ital n}{ge}6) is found large, accounting for nearly one-half of the total rates. Agreements with earlier estimates are at a {plus minus}5% level. For the He-like ions, the high-Rydberg-state contribution is strongly suppressed because of the extra Auger channel which opens up at {ital n}=5--7. Agreement with previous calculations is again at a 5% level. The DR cross sections for the initial metastable states of the He-like ions are also estimated for a few low-lying resonance states near the DR threshold. The cross section for the 2{ital s} {sup 1}S{r arrow}1s2p {sup 1}P+nl excitation capture is found to be very large.

• OSTI ID: 7017622
• Journal Information: Physical Review (Section) A: General Physics; (USA), Vol. 40:12; ISSN 0556-2791
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
CARBON IONS
ELECTRON-ION COLLISIONS
OXYGEN IONS
CROSS SECTIONS
METASTABLE STATES
RECOMBINATION
RYDBERG STATES
CHARGED PARTICLES
COLLISIONS
ELECTRON COLLISIONS
ENERGY LEVELS
EXCITED STATES
ION COLLISIONS
IONS
640302* - Atomic
Molecular & Chemical Physics- Atomic & Molecular Properties & Theory