Dissociative recombination of Ar{sub 2}{sup +}

Journal Article · Sat Apr 15 04:00:00 EDT 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.73.0· OSTI ID:20787105

Royal, J; Orel, A E ^[1]

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1. Department of Applied Science, University of California, Davis, California 95616 (United States)

We present calculated cross sections and rate coefficients for dissociative recombination of the Ar{sub 2}{sup +} molecular ion in the low-energy region (<0.5 eV). In this region, the cross section is dominated by resonances, the repulsive Rydberg states converging to the excited states of the ion, which cross the ground state of the ion near equilibrium geometry. The resonance curves and their parameters were determined from electron scattering calculations using the complex Kohn variational method and molecular quantum chemistry techniques. The nuclear dynamics were studied using a time-independent, nonlocal potential model solved using a discrete variable representation and exterior complex scaling. The calculated cross sections and rate coefficients are reported and compared to available experiments. The temperature dependence of the rate coefficients is examined as well as the branching fractions of the resulting atomic fragments.

• OSTI ID: 20787105
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 4 Vol. 73; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ARGON IONS
BRANCHING RATIO
CATIONS
CROSS SECTIONS
ELECTRONS
EV RANGE
GEOMETRY
GROUND STATES
MOLECULAR IONS
NONLOCAL POTENTIAL
REACTION KINETICS
RECOMBINATION
RESONANCE
RYDBERG STATES
SCATTERING
TEMPERATURE DEPENDENCE
VARIATIONAL METHODS