Strong potential wave functions with elastic channel distortion

Journal Article · Thu Jun 01 00:00:00 EDT 1989 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.39.6064· OSTI ID:6141475

Macek, J; Taulbjerg, K

The strong-potential Born approximation is analyzed in a channel-distorted-wave approach. Channel-distorted SPB wave functions are reduced to a conventional form in which the standard off-energy-shell factor /ital g/ has been replaced by a modified factor ..gamma.., which represents a suitable average of /ital g/ over the momentum distribution of the distorted-channel function. The modified factor is evaluated in a physically realistic model for the distortion potential, and it is found that ..gamma.. is well represented by a slowly varying phase factor. The channel-distorted SPB approximation is accordingly identical to the impulse approximation if the phase variation of ..gamma.. can be ignored. This is generally the case in applications to radiative electron capture and to a good approximation for ordinary capture at not too small velocities.

• Research Organization: University of Tennessee, Knoxville, Tennessee 37996(US); Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6141475
• Journal Information: Phys. Rev. A; (United States), Vol. 39:11
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ION-ATOM COLLISIONS
DISTORTED WAVE THEORY
BORN APPROXIMATION
DEFORMATION
ELECTRON CAPTURE
IMPULSE APPROXIMATION
POTENTIALS
WAVE FUNCTIONS
ATOM COLLISIONS
CAPTURE
COLLISIONS
FUNCTIONS
ION COLLISIONS
640301* - Atomic
Molecular & Chemical Physics- Beams & their Reactions