Laser assisted charge transfer reactions in slow ion--atom collisions: Coupled dressed quasimolecular-states approach

Journal Article · Sun Jul 15 04:00:00 EDT 1984 · J. Chem. Phys.; (United States)

DOI:https://doi.org/10.1063/1.447712· OSTI ID:7098803

Ho, T; Chu, S; Laughlin, C

Semiclassical coupled dressed quasimolecular states (DQMS) approaches are presented for the nonperturbative treatment of charge transfer reactions at low collision velocities and high laser intensities. The DQMS are first obtained via the Floquet theory. The laser assisted collision process can then be treated as the electronic transitions among the DQMS driven by the nuclear motion only. The expansion of the total electronic wave function in a truncated DQMS basis results in a set of coupled adiabatic equations. The adiabatic DQMS and their associated quasienergies (depending parametrically upon the internuclear separation R) exhibit regions of avoided crossings, where the electronic transition probabilities are large due to strong radial couplings induced by the nuclear movement. By further transforming the adiabatic DQMS into an appropriate diabatic DQMS representation, defined via the vanishing of the aforementioned radial couplings, we obtain a new set of coupled diabatic equations which offer computational advantage.

• Research Organization: Department of Chemistry, University of Kansas, Lawrence, Kansas 66045-2112
• OSTI ID: 7098803
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 81:2; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
CHARGE EXCHANGE
CHARGED PARTICLES
COLLISIONS
ELECTROMAGNETIC RADIATION
ELEMENTS
HELIUM IONS
HYDROGEN
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
LASER RADIATION
MULTICHARGED IONS
NONMETALS
RADIATIONS
SEMICLASSICAL APPROXIMATION