Satellites of Dipole-Forbidden and Dipole-Allowed Spectral Lines Under a Strong or High-Frequency Quasimonochromatic Electric Field in Plasmas

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Satellites of Dipole-Forbidden and Dipole-Allowed Spectral Lines Under a Strong or High-Frequency Quasimonochromatic Electric Field in Plasmas

Eugene Oks ^{1 ,*}

1 . Physics Department, 380 Duncan Drive, Auburn University, Auburn, AL 36849, USA

* Authors to whom correspondence should be addressed.

Published in Journal of Fundamental and Observational Physics and Astrophysics ( Volume 1, Issue 1 )

Received: 18 April 2025 Accepted: 17 May 2025 Published: 21 July 2025

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Abstract

We study analytically the satellites of dipole-forbidden and dipole-allowed spectral lines for the situation where in the plasma there is either a strong or high-frequency Quasimonochromatic Electric Field (QEF) of the frequency ω, representing, e.g., the Langmuir wave or an optical laser (or microwave) radiation penetrating the plasma. We demonstrate that the resulting sequence of satellites of the dipole-forbidden and dipole-allowed lines is such that the separation between any two adjacent satellites is 2ω. We show that the separation of any satellite from the unperturbed position of the dipole-forbidden or dipole allowed line is not an integer number of ω – all of them are shifted by the same amount controlled by the parameters of the QEF and of the radiating atom/ion. Based on this shift, we propose a new method for the spectroscopic diagnostic of the parameters of the QEF in plasmas – the method having an advantage over the existing methods. We also provide some examples of spectral lines of atoms and molecules that can be employed for taking the advantage of this diagnostic method.

Published in	Journal of Fundamental and Observational Physics and Astrophysics (Volume 1, Issue 1)
DOI	register/s10668-024-05352-4
Page(s)	15
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s). Published by Open Access Press

Keywords

satellites of spectral lines, quasimonochromatic electric field, Langmuir waves, laser radiation, shift of satellites, spectroscopic diagnostic method

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APA Style

Oks, E. E. (2024). Satellites of Dipole-Forbidden and Dipole-Allowed Spectral Lines Under a Strong or High-Frequency Quasimonochromatic Electric Field in Plasmas. Journal of Fundamental and Observational Physics and Astrophysics, 1, (1), 6. https://doi.org/register/s10668-024-05352-4

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ACS Style

Oks, E. Satellites of Dipole-Forbidden and Dipole-Allowed Spectral Lines Under a Strong or High-Frequency Quasimonochromatic Electric Field in Plasmas. Mach. Learn. Res. (2024), 1, (1), 6. doi: https://doi.org/register/s10668-024-05352-4

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AMA Style

Oks . Satellites of Dipole-Forbidden and Dipole-Allowed Spectral Lines Under a Strong or High-Frequency Quasimonochromatic Electric Field in Plasmas. Mach Learn Res. (2024);1(1):6. doi: https://doi.org/register/s10668-024-05352-4

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