Electromagnetic Burst Generation during Annihilation of Magnetic Field in Relativistic Laser-Plasma Interaction

Year: 2019

Authors: GU YK., Pegoraro F., Sasorov PV., Golovin D., Yogo A., Korn G., Bulanov SV.

Autors Affiliation: ELI Beamli Nes, Inst Phys ASCR, Na Slovance 2, Prague 18221, Czech Republic; CAS, Inst Plasma Phys, Za Slovankou 1782-3, Prague 18200, Czech Republic; Univ Pisa, Enrico Fermi Dept Phys, Pisa, Italy; CNR INO, Natl Res Council, Natl Inst Opt, Pisa, Italy; Russian Acad Sci, Keldysh Inst Appl Math, Miusskaya Ploshchad 4, Moscow 125047, Russia; Osaka Univ, Inst Laser Engn, 2-6 Yamada-Oka, Suita, Osaka 5650871, Japan; Japan Sci & Technol Agcy, PRESTO, Kawaguchi, Saitama 3320012, Japan; Natl Inst Quantum & Radiol Sci & Technol, Kansai Photon Res Inst, 8-1-7 Umemidai, Kizugawa, Kyoto 6190215, Japan; Russian Acad Sci, Prokhorov Gen Phys Inst, Vavilov Str 38, Moscow 119991, Russia.

Abstract: We present the results of theoretical studies of formation and evolution of the current sheet in a colliosionless plasma during magnetic reconnection in relativistic limit. Relativistic magnetic reconnection is driven by parallel laser pulses interacting with underdense plasma target. Annihilation of laser created magnetic field of opposite polarity generates strong non-stationary electric field formed in between the region with opposite polarity magnetic field accelerating charged particles within the current sheet. This laser-plasma target configuration is discussed in regard with the laboratory modeling of charged particle acceleration and gamma flash generation in astrophysics. We present the results of 3-dimensional kinetic simulations and theoretical studies on the formation and evolution of the current sheet in a collisionless plasma during magnetic field annihilation in the ultra-relativistic limit. Annihilation of oppositively directed magnetic fields driven by two laser pulses interacting with underdense plasma target is accompanied by an electromagnetic burst generation. The induced strong non-stationary longitudinal electric field accelerates charged particles within the current sheet. Properties of the laser-plasma target configuration are discussed in the context of the laboratory modeling for charged particle acceleration and gamma flash generation in astrophysics.

Journal/Review: SCIENTIFIC REPORTS

Volume: 9      Pages from: 19462-1  to: 19462-10

More Information: We thank Prof. M. Tavani for fruitful discussions. This work was supported by the project ELITAS (CZ.02.1.01/0.0/0.0/16_013/0001793) and by the project High Field Initiative (CZ.02.1.01/0.0/0.0/15_003/0000449) from European Regional Development Fund. Computational resources were provided by the MetaCentrum under the program LM2010005, IT4Innovations Centre of Excellence under projects CZ.1.05/1.1.00/02.0070 and LM2011033 and by ECLIPSE cluster of ELI-Beamlines. This work was also supported by PRESTO (JPMJPR15PD) commissioned by Japan Science and Technology Agency. The EPOCH code was developed as part of the UK EPSRC funded projects EP/G054940/1.
KeyWords: GAMMA-RAY FLARES; LINE RECONNECTION; ACCELERATION
DOI: 10.1038/s41598-019-55976-0

Citations: 13
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