Schwinger variational principle for electron-molecule scattering: Application to electron-hydrogen scattering

Journal Article · Sat Mar 01 04:00:00 EST 1980 · Phys. Rev., A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.21.738· OSTI ID:5661088

Watson, D K; Lucchese, R R; McKoy, V; Rescigno, T N

The authors report the first application of the Schwinger variational principle to electron-molecule scattering. Results for electron-H/sub 2/ scattering in the static-exchange approximation show that the Schwinger method can provide accurate solutions of the scattering problem with small discrete basis sets. The Schwinger variational expression is found to converge far more quickly with respect to the size of the basis than any other algebraic expansion technique considered to date. Results are also presented for hybrid trial scattering wave functions containing both continuum and discrete basis functions.

• Research Organization: A. A. Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, California 91125
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5661088
• Journal Information: Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 21:3; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
COLLISIONS
CRYOGENIC FLUIDS
ELECTRON COLLISIONS
ELECTRON-MOLECULE COLLISIONS
ELEMENTS
FLUIDS
FUNCTIONS
HYDROGEN
MOLECULE COLLISIONS
MOLECULES
NONMETALS
SCHWINGER VARIATIONAL METHOD
VARIATIONAL METHODS
WAVE FUNCTIONS