Journal ArticleDOI
A quantum unified theory of Stark broadening in the wings of spectral lines
TLDR
In this paper, a simple and tractable quantum expression of the line wings is given when the upper and lower levels of the spectral lines are both perturbed, and this quantum profile converges towards the impact regime at small distances from the line centre and towards the quasistatic limit when the usual semiclassical approximations are made.Abstract:
A simple and tractable quantum expression of the line wings is given when the upper and lower levels of the spectral lines are both perturbed. This quantum profile converges towards the impact regime at small distances from the line centre and towards the quasistatic limit when the usual semiclassical approximations are made. The correspondence between quantum and semiclassical expressions is examined, and the passage from the former to the latter clarifies the implicit assumptions which are always made in any unified semiclassical approach.read more
Citations
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Journal ArticleDOI
Theory of the pressure broadening and shift of spectral lines.
TL;DR: The broadening and shift of spectral lines caused by the interaction of the emitting (or absorbing) atoms with surrounding particles in the plasma are commonly observed in laboratory and astronomical spectra as mentioned in this paper.
Journal ArticleDOI
Stark Profile Calculations for Lyman Series Lines of One-Electron Ions in Dense Plasmas.
TL;DR: In this article, the frequency distributions of the first six Lyman lines of hydrogen-like carbon, oxygen, neon, magnesium, aluminum, and silicon ions broadened by the local fields of both ions and electrons are calculated for dense plasmas.
Stark profile calculations for Lyman series lines of one-electron ions in dense plasmas. Interim report
P.C. Kepple,H.R. Griem +1 more
TL;DR: In this paper, the frequency distributions of the first six Lyman lines of hydrogen-like carbon, oxygen, neon, magnesium, aluminum, and silicon ions broadened by the local fields of both ions and electrons are calculated for dense plasmas.
Journal ArticleDOI
Kramers electrodynamics and electron-atomic radiative-collisional processes
TL;DR: The Kramers Electrodynamics (KrED) method as mentioned in this paper was proposed to describe inelastic atomic processes caused by electrons of low and moderate energies (typical for most plasmas) in a quantum-mechanically substantiated way.
Book ChapterDOI
Broadening of Spectral Lines
TL;DR: In this paper, the authors present the general theory of impact broadening based on the density-matrix and quantum kinetic equation methods, which permit not only the line shape to be described in the case of spontaneous emission or linear absorption, but also allow nonlinear effects arising in laser spectroscopy to be considered.
References
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Book
Spectral Line Broadening by Plasmas
Hans R. Griem,W. L. Barr +1 more
TL;DR: SpectSpectral Line Broadening by Plasmas as discussed by the authors provides a theoretical overview of the spectral line broadening mechanism and its application in the field of plasma spectroscopy, with a focus on spectral lines.
Journal ArticleDOI
Line-widths of pressure-broadened spectral lines
C.J. Tsao,B. Curnutte +1 more
TL;DR: In this article, the impact theory of Anderson has been used to calculate the widths of pressure-broadened spectral lines by using the impact matrix of the interaction matrix, which has been extended to include the effect of the nonresonant terms of interaction matrix.
Journal ArticleDOI
The polarization of atomic line radiation excited by electron impact
TL;DR: In this article, a theory of the probability of a polarized photon being emitted by the complete system of atom + electron was developed, which is based on the calculation of the cross-sections QM for excitation of states of definite component of angular momentum along the direction of the electron beam.
Journal ArticleDOI
The partial wave theory of electron-hydrogen atom collisions
I. C. Percival,M. J. Seaton +1 more
TL;DR: In this paper, the solution of the algebraic problems arising in the partial wave treatment of electron-hydrogen atom collisions is discussed, where explicit antisymmetrized wave functions are used throughout.