Quantum-mechanical treatment of strong electron-atom collision contributions to the shift and width of hydrogen lines

Journal Article · Fri Dec 01 04:00:00 EST 1995 · Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics

DOI:https://doi.org/10.1103/PhysRevE.52.6658· OSTI ID:147858

Koenies, A; Guenter, S ^[1]

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1. Fachbereich Physik, Universitaet Rostock, Universitaetsplatz 1, 18051 Rostock (Germany)

A quantum-mechanical theory based on a Green`s function technique has been applied to calculate the shifts and the widths of hydrogen lines. Strong collision contributions have been treated via partial summation of the corresponding perturbation series. Therefore, the developed theory contains no arbitrary cutoff parameters. The calculated widths and shifts have been compared to those given by a close-coupling approach [K. Unnikrishnan and J. Callaway, Phys. Rev. A 44, 3001 (1991); 43, 3619 (1991)], semiclassical results of the unified theory, and Griem`s cutoff procedure [H. R. Griem, Phys. Rev. A 38, 2943 (1988)] for the perturbation theory. Electronic contributions to widths and shifts of the hydrogen lines up to main quantum numbers {ital n}{le}4 without arbitrary cutoff parameters have been calculated. (c) 1995 The American Physical Society

• OSTI ID: 147858
• Journal Information: Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, Journal Name: Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics Journal Issue: 6 Vol. 52; ISSN PLEEE8; ISSN 1063-651X
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CALCULATION METHODS
ELECTRON-ATOM COLLISIONS
HYDROGEN
LINE WIDTHS
SPECTRAL SHIFT