Energy-modified adiabatic approximation for scattering theory
Journal Article
·
· Phys. Rev., A; (United States)
The adiabatic approximation in scattering theory is modified by allowing for the splitting and shifts of perturbed target-state energy levels. This energy-modified adiabatic approximation, derived from operator equations formally equivalent to close-coupling equations in the basis of perturbed target states, is shown to be qualitatively correct for threshold and resonance structures, for which the usual adiabatic theory is inadequate. In the case of electron-molecule vibrational excitation, it is shown that electronic threshold scattering structures should be associated with each vibrational threshold. A single electronic resonance becomes a manifold of multichannel vibrational excitation resonances. Vibrational excitation structures in e/sup -/-N/sub 2/ scattering are computed as an example of the method.
- Research Organization:
- IBM Research Laboratory, San Jose, California 95193
- OSTI ID:
- 6467460
- Journal Information:
- Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 19:2; ISSN PLRAA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Theory of electron-molecule scattering: comments on the adiabatic-nuclei approximation
Adiabatic approximations for the nuclear excitation of molecules by low-energy electron impact: Rotational excitation of H/sub 2/
Application of the modified adiabatic approximation to the helium atom
Journal Article
·
Fri Oct 31 23:00:00 EST 1975
· Phys. Rev., A, v. 12, no. 5, pp. 1895-1902
·
OSTI ID:4123793
Adiabatic approximations for the nuclear excitation of molecules by low-energy electron impact: Rotational excitation of H/sub 2/
Journal Article
·
Tue May 01 00:00:00 EDT 1984
· Phys. Rev. A; (United States)
·
OSTI ID:6813896
Application of the modified adiabatic approximation to the helium atom
Journal Article
·
Fri Jun 01 00:00:00 EDT 1973
· Opt. Spectrosc. (USSR) (Engl. Transl.), v. 34, no. 6, pp. 601-604
·
OSTI ID:4322244
Related Subjects
640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ADIABATIC APPROXIMATION
COLLISIONS
CRYOGENIC FLUIDS
ELECTRON COLLISIONS
ELECTRON-MOLECULE COLLISIONS
ELEMENTS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXCITED STATES
FLUIDS
MOLECULE COLLISIONS
NITROGEN
NONMETALS
VIBRATIONAL STATES
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ADIABATIC APPROXIMATION
COLLISIONS
CRYOGENIC FLUIDS
ELECTRON COLLISIONS
ELECTRON-MOLECULE COLLISIONS
ELEMENTS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXCITED STATES
FLUIDS
MOLECULE COLLISIONS
NITROGEN
NONMETALS
VIBRATIONAL STATES