Dissociative recombination without a curve crossing

Journal Article · Wed Jun 01 00:00:00 EDT 1994 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.49.R4277· OSTI ID:7116637

Guberman, S L ^[1]

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1. Institute for Scientific Research, 33 Bedford Street, Lexington, Massachusetts 02173 (United States)

[ital Ab] [ital initio] calculations show that a curve crossing is not always needed for a high dissociative-recombination cross section. For HeH[sup +], in which no neutral states cross the ion potential curve, dissociative recombination is driven by the nuclear kinetic-energy operator on adiabatic potential curves. The kinetic-energy derivative operator allows for capture into repulsive curves that are outside of the classical turning points for the nuclear motion. The dominant dissociative route is the [sup 2][Sigma][sup +] state leading to H([ital n]=2) atoms. An analogous mechanism is proposed for the dissociative recombination of H[sub 3][sup +].

• OSTI ID: 7116637
• Journal Information: Physical Review A; (United States), Vol. 49:6; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
HELIUM HYDRIDES
ELECTRON-ION COLLISIONS
MOLECULAR IONS
TRITIUM IONS
CROSS SECTIONS
DISSOCIATION
EXCITATION
RECOMBINATION
CHARGED PARTICLES
COLLISIONS
ELECTRON COLLISIONS
ENERGY-LEVEL TRANSITIONS
HELIUM COMPOUNDS
HYDRIDES
HYDROGEN COMPOUNDS
ION COLLISIONS
IONS
RARE GAS COMPOUNDS
664300* - Atomic & Molecular Physics- Collision Phenomena- (1992-)