Unified description of radiative and dielectronic recombination, including the coupling between autoionization and radiation continua

Details Unified description of radiative and dielectronic recombination, including the coupling between autoionization and radiation continua Unified description of radiative and dielectronic recombination, including the coupling between autoionization and radiation continua

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987phrva..36.1093j&link_type=abstract

Physical Review A - General Physics, 3rd Series (ISSN 0556-2791), vol. 36, Aug. 1, 1987, p. 1093-1113.

Physics

General Physics

33

Autoionization, Electron-Ion Recombination, Radiation Distribution, Recombination Coefficient, S Matrix Theory, Wave Propagation, Angular Momentum, Eigenvectors, Electromagnetic Coupling, Hamiltonian Functions, High Temperature Plasmas, Ionization Cross Sections, Solar Flares

Scientific paper

A unified description of radiative and dielectronic recombination is presented that incorporates a nonperturbative treatment of the electromagnetic coupling between the autoionization and radiative decay continua. Particular attention is given to the angular momentum degeneracy of the atomic levels and to the multiplicity of angular momentum components in the partial-wave expansion for the electron-continuum state. Through the introduction of vertex functions and of a modified propagator, the S matrix describing the combined electron-ion photorecombination process is expressed as the sum of a resonant and a nonresonant transition amplitude. Future extensions to incorporate multicontinuum-channel recombination, the effects of overlapping autoionizing resonances, renormalization, and the effects of collisional dephasing processes and plasma electric microfields are discussed.

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