Coupled states approximation study of inelastic H/sup +/--H/sub 2/ collisions at 3. 7 eV. [Rotational excitation, coupling, diabatic ground state H/sub 3//sup +/]

Journal Article · Fri Oct 15 04:00:00 EDT 1976 · J. Chem. Phys.; (United States)

OSTI ID:7337123

McGuire, P

Using the diabatic ground state H/sup +//sub 3/ surface given in analytic form by Giese and Gentry, a coupled-states study of the rotational excitation of H/sub 2/ (taken as a rigid rotor) by proton impact is made at 3.7 eV. Transitions 0..-->..j', with j'=0,2,4,...,26, are considered, and one finds a broad distribution in final rotor state j' which is consistent with recent beam experiments. Despite long-range rotational coupling produced by the charge-quadrupole interaction, the coupled-states method gives a good description of the rotational excitation process as is demonstrated by comparison to standard close-coupling cross sections. Intermultiplet transitions (neglected in the coupled-states approximations) are shown to be less important in the high energy limit. (AIP)

• Research Organization: Fachbereich Physik, Universitat Kaiserslautern, 675 Kaiserslautern, West Germany
• OSTI ID: 7337123
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 65:8; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
CATIONS
CHARGED PARTICLES
COLLISIONS
CRYOGENIC FLUIDS
ELEMENTS
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EV RANGE
EV RANGE 01-10
EXCITATION
EXCITED STATES
FLUIDS
HYDROGEN
HYDROGEN IONS
HYDROGEN IONS 1 PLUS
ION COLLISIONS
ION-MOLECULE COLLISIONS
IONS
MOLECULE COLLISIONS
NONMETALS
ROTATIONAL STATES