Resonance and intermediate-coupling effects in electron scattering with highly charged ions. III. Ca/sup 18 +/

Journal Article · Sun Jul 01 04:00:00 EDT 1984 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.30.100· OSTI ID:6651530

Pradhan, A K

Effective collision strengths are presented for all 78 inelastic transitions, including the fine structure, involving the states 1s/sup 2/(/sup 1/S/sub 0/), 1s2s(/sup 3/S/sub 1/,/sup 1/S/sub 0/), 1s2p(/sup 3/P/sub 0,1,2/,/sup 1/P1 ), 1s3s(/sup 3/S/sub 1/,/sup 1/S/sub 0/), and 1s3p(/sup 3/P/sub 0,1,2/,/sup 1/P1 ) in Ca/sup 18 +/. Resonance effects due to autoionization and dielectronic recombination are considered as in earlier papers. Departure from LS coupling, due to relativistic effects, is included with use of the Breit-Pauli approximation. A nine-state distorted-wave approximation is employed for partial waves l,l'< or =15; the contribution from l>15 to optically allowed transitions is treated by the Coulomb-Bethe method. Dipole oscillator strengths for 28 allowed transitions are also calculated. Resonance and relativistic effects are shown to be important for a number of transitions.

• Research Organization: Joint Institute for Laboratory Astrophysics, University of Colorado and National Bureau of Standards, Boulder, Colorado 80309
• OSTI ID: 6651530
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 30:1; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular &amp; Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
AUTOIONIZATION
CALCIUM IONS
CHARGED PARTICLES
COLLISIONS
COUPLING
DISTORTED WAVE THEORY
ELECTRON COLLISIONS
ELECTRON-ION COLLISIONS
INELASTIC SCATTERING
INTERMEDIATE COUPLING
ION COLLISIONS
IONIZATION
IONS
L-S COUPLING
MULTICHARGED IONS
OSCILLATOR STRENGTHS
RECOMBINATION
RESONANCE
SCATTERING
SOLAR ACTIVITY
SOLAR FLARES