Abstract
This study explores vortex beam dynamics in the context of stimulated Raman scattering (SRS) in plasma. A thorough analysis is conducted to investigate the influence of vortex beams on plasma electron oscillations and wave generation, including a detailed examination of the relevant equations. Dispersion relations and growth rates, especially in relation to different azimuthal eigenmodes, are discussed. These discoveries contribute to more profound understanding of the dynamics of vortex beams within plasma during SRS, providing valuable insights that can be applied across diverse scientific fields. The results show that with the increase of the azimuthal value, significant trends emerge in the normalized frequency. Furthermore, the growth rate of SRS demonstrates an initial ascent followed by a subsequent reduction with varying azimuthal eigenmode numbers. In this paper, the behaviour of intensity profile in vortex cosine-hyperbolic Gaussian laser beam is studied when it travels in a plasma medium. The study shows that the intensity is minimized as the centre of this ring-shaped intensity profile.
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The data underlying the results presented in this manuscript may be obtained from the authors after making a reasonable request. The manuscript has associated data in a data repository.
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Kamboj, O., Azad, T., Zare, S. et al. Dynamics of vortex beams on stimulated Raman scattering in plasma. Eur. Phys. J. Plus 139, 301 (2024). https://doi.org/10.1140/epjp/s13360-024-05095-1
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DOI: https://doi.org/10.1140/epjp/s13360-024-05095-1