Electron-ion collisions at medium energies. II. Effect of radiative coupling

Journal Article · Wed Sep 01 04:00:00 EDT 1982 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.26.1385· OSTI ID:6525730

Hahn, Y; LaGattuta, K; McLaughlin, D

The conventional treatment of electron-ion collisions at low energies by the coupled-channel method (CCM) neglects the radiative channels. The effect of radiation is then usually included afterwards perturbatively. For heavy ionic targets, however, the radiative coupling is often much stronger than the electron-electron correlations, so that the CCM should be modified to incorporate the radiative channels correctly. We present a modified formulation in which both the radiative and Auger channels are treated on an equal footing. At medium energies pseudostates are generated wtih the inclusion of radiative coupling, and an averaging over the pseudoresonances is carried out using the Stieltjes mean spectral functions. The resulting formalism should be useful in the evaluation of dielectronic recombination and Auger ionization amplitudes.

• Research Organization: Department of Physics, University of Connecticut, Storrs, Connecticut 06268
• OSTI ID: 6525730
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 26:3; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
AUGER EFFECT
COLLISIONS
COUPLING
CROSS SECTIONS
ELECTROMAGNETIC FIELDS
ELECTRON COLLISIONS
ELECTRON-ION COLLISIONS
ION COLLISIONS
IONIZATION
RECOMBINATION