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Volume 25 - ICOP & ICPET 2019
ICOP & ICPET _ INPC _ ICOFS 2019, 25 - ICOP & ICPET 2019: 973-976 |
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Khuniki R, Fallah R, Khorashanizadeh S M, Niknam A. Investigation of self-focusing of Gaussian laser beam with circular polarization in magnetized plasma. ICOP & ICPET _ INPC _ ICOFS 2019; 25 :973-976
URL: http://opsi.ir/article-1-1887-en.html
URL: http://opsi.ir/article-1-1887-en.html
1- Department of physics, University of Birjand, Birjand, Iran
2- Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, Iran
2- Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, Iran
Abstract: (1880 Views)
In this paper, the phenomenon of self-focusing of Gaussian laser beam with right and left circular polarization propagating in a magnetized plasma has been investigated in a weakly relativistic regime. For this purpose, using the Maxwell equations and the plasma-governing equations, a nonlinear equation describing changes in the amplitude of the beam is obtained. Then, the effect of external magnetic field on the self-focusing of the beam with the right and left circular polarization is investigated. It is shown that applying a longitudinal magnetic field in the plasma which causes the growth in the self-focusing of the right-circularly polarized beam and increase in the divergence of the left-circularly polarized beam is observed. Also, the role of the beam intensity and frequency on the self-focusing of the Gaussian beam is shown.
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