Studies of electron--polyatomic-molecule collisions: Applications to e-CH/sub 4/

Journal Article · Fri Nov 01 04:00:00 EST 1985 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.32.2696· OSTI ID:6373972

Lima, M A.P.; Gibson, T L; Huo, W M; McKoy, V

We report the first application of the Schwinger multichannel formulation to low-energy electron collisions with a nonlinear polyatomic target. Integral and differential cross sections are obtained for e-CH/sub 4/ collisions from 3 to 20 eV at the static-plus-exchange interaction level. In these studies the exchange potential is directly evaluated and not approximated by local models. An interesting feature of the small-angle differential cross section is ascribed to polarization effects and not reproduced at the static-plus-exchange level. Our differential cross sections are found to be in reasonable agreement with existing measurements at 7.5 eV and higher energies.

• Research Organization: A. A. Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, California 91125
• OSTI ID: 6373972
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 32:5; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ALKANES
COLLISIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DIFFERENTIAL EQUATIONS
ELECTRON COLLISIONS
ELECTRON-MOLECULE COLLISIONS
ENERGY RANGE
EQUATIONS
EV RANGE
EV RANGE 01-10
EV RANGE 10-100
EXCHANGE INTERACTIONS
HYDROCARBONS
INTEGRAL CROSS SECTIONS
INTERACTIONS
METHANE
MOLECULE COLLISIONS
ORGANIC COMPOUNDS
POLARIZATION
SCATTERING
SCHWINGER FUNCTIONAL EQUATIONS