The energy of an intense ultrashort laser pulse interacting with high density (still under dense) plasma is typically transformed into electron heating and in excitation of nonlinear coherent structures such as magnetic vortices, solitons, or post-solitons. Using 33 TW 30 fs laser pulses and a high-density nitrogen gas jet, we experimentally investigated magnetic vortices in the laser pulse collapse region where electrons are efficiently accelerated and heated. Those vortices, which are associated with rapidly decaying magnetic fields, are found to be immobile and persist for several picoseconds. A collisionless plasma was formed due to the quasi-static field ionization of the gas associated with the hot and fast electron currents. The evolution dynamics of such nonlinear plasma phenomena have been monitored by using a 30-fs probe laser beam through employing the polarimetric and shadowgraphic techniques. Our experimental results are also supported by particle-in-cell simulations.
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February 2019
Research Article|
February 26 2019
Ultrafast dynamics of magnetic vortices and pulse collapse in a laser-under dense plasma interaction
Guangyu Li
;
Guangyu Li
1
Key Laboratory for Laser Plasmas (Ministry of Education), Collaborative Innovation Center of IFSA (CICIFSA), School of Physics and Astronomy, Shanghai Jiao Tong University
, Shanghai 200240, China
2
Particle and Terahertz Sources Division, ELI-ALPS, ELI-HU Non-Profit, Ltd.
, H-6720 Szeged, Hungary
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Song Li
;
Song Li
a)
1
Key Laboratory for Laser Plasmas (Ministry of Education), Collaborative Innovation Center of IFSA (CICIFSA), School of Physics and Astronomy, Shanghai Jiao Tong University
, Shanghai 200240, China
2
Particle and Terahertz Sources Division, ELI-ALPS, ELI-HU Non-Profit, Ltd.
, H-6720 Szeged, Hungary
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Quratul Ain
;
Quratul Ain
1
Key Laboratory for Laser Plasmas (Ministry of Education), Collaborative Innovation Center of IFSA (CICIFSA), School of Physics and Astronomy, Shanghai Jiao Tong University
, Shanghai 200240, China
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Kai Gao;
Kai Gao
1
Key Laboratory for Laser Plasmas (Ministry of Education), Collaborative Innovation Center of IFSA (CICIFSA), School of Physics and Astronomy, Shanghai Jiao Tong University
, Shanghai 200240, China
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Mohammad Mirzaie
;
Mohammad Mirzaie
1
Key Laboratory for Laser Plasmas (Ministry of Education), Collaborative Innovation Center of IFSA (CICIFSA), School of Physics and Astronomy, Shanghai Jiao Tong University
, Shanghai 200240, China
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Nasr A. M. Hafz
Nasr A. M. Hafz
b)
1
Key Laboratory for Laser Plasmas (Ministry of Education), Collaborative Innovation Center of IFSA (CICIFSA), School of Physics and Astronomy, Shanghai Jiao Tong University
, Shanghai 200240, China
2
Particle and Terahertz Sources Division, ELI-ALPS, ELI-HU Non-Profit, Ltd.
, H-6720 Szeged, Hungary
3
Division of Materials and Nuclear Manufacturing, Department of Plasma and Nuclear Fusion, Nuclear Research Center, Atomic Energy Authority
, Abu-Zabal 13759, Egypt
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a)
E-mail: [email protected]
b)
Electronic addresses: [email protected] and [email protected]
Phys. Plasmas 26, 022306 (2019)
Article history
Received:
August 24 2018
Accepted:
February 04 2019
Citation
Guangyu Li, Song Li, Quratul Ain, Kai Gao, Mohammad Mirzaie, Nasr A. M. Hafz; Ultrafast dynamics of magnetic vortices and pulse collapse in a laser-under dense plasma interaction. Phys. Plasmas 1 February 2019; 26 (2): 022306. https://doi.org/10.1063/1.5053636
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