Calculating vibrational-excitation cross sections off the energy shell: A first-order adiabatic theory

Journal Article · Tue Dec 01 04:00:00 EST 1987 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.36.5474· OSTI ID:5512572

Abdolsalami, M; Morrison, M A

We report the implementation of a first-order nondegenerate adiabatic theory for vibrational excitation of H/sub 2/ by electrons with energies from threshold to 10 eV. Solution of the scattering equations in this method is far simpler than in a full close-coupling calculation because the method is based on an adiabatic factorization of the electron-molecule scattering ket. The method, however, yields low-energy cross sections that are far more accurate than those of traditional adiabatic-nuclei approximations because its transition matrix is calculated off the energy-momentum shell.

• Research Organization: Department of Physics and Astronomy, University of Oklahoma, Norman, Oklahoma 73019
• OSTI ID: 5512572
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 36:11; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ADIABATIC APPROXIMATION
COLLISIONS
CROSS SECTIONS
ELECTRON COLLISIONS
ELECTRON-MOLECULE COLLISIONS
ELEMENTS
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EV RANGE
EV RANGE 01-10
EXCITATION
EXCITED STATES
HYDROGEN
MOLECULE COLLISIONS
NONMETALS
VIBRATIONAL STATES