Two dimensional effects of laser interacting with magnetized plasma

Recent advancements in low-frequency short-pulse \(CO_2\) lasers and the production of strong magnetic fields have made experimental studies on laser interactions with magnetized plasma a near-future possibility. Therefore, theoretical and numerical simulation studies have been pursued lately in thi...

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Bibliographic Details
Published in:arXiv.org 2023-11
Main Authors: Laxman Prasad Goswami, Das, Amita, Vijay, Anuj
Format: Article
Language:English
Subjects:
Controlled fusion
Density stratification
Diamagnetism
Drift
Energy absorption
Harmonic generations
Lasers
Physics
Plasma
Plasma physics
Ponderomotive forces
Short pulses
Temperature effects
Online Access:Get full text
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Summary:Recent advancements in low-frequency short-pulse \(CO_2\) lasers and the production of strong magnetic fields have made experimental studies on laser interactions with magnetized plasma a near-future possibility. Therefore, theoretical and numerical simulation studies have been pursued lately in this direction [A. Das, Review of Modern Plasma Physics 4, 1 (2020)] illustrating a host of novel phenomena related to laser energy absorption [Vashistha et al., New Journal of Physics, 22(6):063023 (2020); Goswami et al., Plasma Physics and Controlled Fusion 63, 115003 (2021)], harmonic generation [Maity et al., Journal of Plasma Physics, 87(5) (2021)], etc. However, most of these studies have been carried out in one-dimensional geometry with the laser having infinite transverse extent, and the plasma target was considered cold. This manuscript explores the manifestation of the 2-D and thermal effects on the problem of a laser interacting with magnetized plasma. As expected, additional transverse ponderomotive force is shown to be operative. A finite temperature of the target, along with transverse density stratification generates, leads to diamagnetic drift for the two plasma species. The imbalance of this drift between the two species can be an additional effect leading to an enhancement of laser energy absorption. The Particle - In - Cell (PIC) simulations with the OSIRIS4.0 platform is used to explore these features.
ISSN:2331-8422