Theoretical study of dielectronic recombination for Li like ions
The dielectronic recombination rate coefficients (DR) are calculated in the nonoverlapping resonance approximation for the target ions O/sup 5 +/, Ar/sup 15 +/, Fe/sup 23 +/, and Mo/sup 39 +/ at several electron temperatures for the initial state 1s/sup 2/2s. The autoionizing and radiative transition probabilities are computed with single configurations, nonrelativistic Hartree-Fock wavefunctions and LS coupling. All possible Rydberg autoionizing states and their cascades are included. The relative contributions to the total DR rate and the electron temperature dependences of the 1s, 2s(..delta.. n not equal to 0), and 2s(..delta.. n = 0; 2s ..-->.. 2p) transitions are examined for each ion. We find that the main contribution to the DR rate is from 2s electron excitation (both ..delta.. n not equal to 0 and ..delta.. n = 0 processes), although the contribution from 1s excitation is found to be as large as 40% of the total rate at high temperatures. Finally the effect of configuration mixing is examined for a group of dominant states and the effect on the overall rate is estimated. The structure of the DR cross section is also investigated for various ranges of projectile energies.
- Research Organization:
- Connecticut Univ., Storrs (USA)
- OSTI ID:
- 6248329
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ARGON IONS
AUTOIONIZATION
CHARGED PARTICLES
CONFIGURATION MIXING
CORRECTIONS
COUPLING
CROSS SECTIONS
DATA
ENERGY-LEVEL TRANSITIONS
FUNCTIONS
HARTREE-FOCK METHOD
INFORMATION
INTERACTIONS
INTERMEDIATE COUPLING
IONIZATION
IONS
IRON IONS
L-S COUPLING
MOLYBDENUM IONS
MULTICHARGED IONS
NUMERICAL DATA
OXYGEN IONS
RECOMBINATION
RYDBERG CORRECTION
TEMPERATURE DEPENDENCE
THEORETICAL DATA
WAVE FUNCTIONS