Showing papers by "Hanyang University published in 1977"
TL;DR: In this paper, the effect of high-frequency turbulent electric fields on the π-component of the allowed 11S0−31P1 line and the forbidden 11S 0−31D2 line in atomic absorption spectra of a magnetoactive He I plasma is investigated from the coupled equations for the probability amplitudes of atomic states.
Abstract: The effect of three-dimensional high-frequency turbulent electric fields on the π-component of the allowed 11S0−31P1 line and the forbidden 11S0−31D2 line in atomic absorption spectra of a magnetoactive He I plasma is investigated from the coupled equations for the probability amplitudes of atomic states. It is shown that these turbulent electric fields give rise to a spectral shift of the π-component of the allowed line and to satellites about a forbidden line. The calculation reveals that the shift is proportional to the mean square stochastic electric field, and that the ratio of the intensity of the near satellite to that of the far satellite is different from the one obtained by second-order perturbation theory in the absence of a laser field. It is also shown that the spectral positions of the satellite lines are shifted in the presence of the laser field. A discussion is given of the circumstances under which these shifts and satellites should be observed. Observation of these shifts and satellites permits a quantitative determination of the intensity of the stochastic electric field and of the average electron density.
1 citations
TL;DR: In this article, a theory for the effect of very strong stochastic electric fields on forbidden lines of atomic absorption spectra is given, where the electric field fluctuations give rise to satellite lines which are disposed symmetrically in pairs about the forbidden line and separated from it by 3 Ω, where Ω is the plasma frequency.
Abstract: A theory is given for the effect of very strong stochastic electric fields on forbidden lines of atomic absorption spectra. It is shown that the electric-field fluctuations give rise to satellite lines which are disposed symmetrically in pairs about the forbidden line and separated from it by 3Ω, where Ω is the plasma frequency. Observation of these lines permits a quantitative determination of the intensity of strong stochastic fields in plasmas.
1 citations