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Multichannel Schwinger variational cross sections for electron-impact excitation of the b /sup 3/. sigma. /sub u//sup +/ state in H/sub 2/

Journal Article · · Phys. Rev. A; (United States)
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As a first application of the Schwinger multichannel theory, we have calculated integral and differential cross sections for electron-impact excitation of the transition X /sup 1/..sigma../sub g//sup +/..-->..b /sup 3/..sigma../sub u//sup +/ in H/sub 2/ for scattering energies from 13 to 30 eV at the two-state level. We find good agreement between our integral cross sections and the results obtained previously in a two-state close-coupling study. Our method does not rely on single-center expansions to calculate the body-frame scattering amplitude and is designed to be applicable to molecules of arbitrary geometry.

Research Organization:
Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, California 91125
OSTI ID:
6259353
Journal Information:
Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 30:4; ISSN PLRAA
Country of Publication:
United States
Language:
English

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Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
AMPLITUDES
COLLISIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
ELECTRON COLLISIONS
ELECTRON-MOLECULE COLLISIONS
ELEMENTS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EQUATIONS
EV RANGE
EV RANGE 10-100
EXCITATION
HYDROGEN
INTEGRAL CROSS SECTIONS
INTEGRAL EQUATIONS
LIPPMANN-SCHWINGER EQUATION
MOLECULE COLLISIONS
NONMETALS
SCATTERING AMPLITUDES
SCHWINGER VARIATIONAL METHOD
VARIATIONAL METHODS