Fast magnetic-field annihilation in the relativistic collisionless regime driven by two ultrashort high-intensity laser pulses

0466669 - FZÚ 2017 RIV US eng J - Článek v odborném periodiku
Gu, Yanjun - Klimo, Ondřej - Kumar, D. - Liu, Y. - Singh, Sushil K. - Esirkepov, T.Z. - Bulanov, S.V. - Weber, Stefan A. - Korn, Georg
Fast magnetic-field annihilation in the relativistic collisionless regime driven by two ultrashort high-intensity laser pulses.
Physical Review E. Roč. 93, č. 1 (2016), 1-6, č. článku 013203. ISSN 1539-3755
Grant CEP: GA MŠMT EF15_008/0000162
Grant ostatní: ELI Beamlines(XE) CZ.02.1.01/0.0/0.0/15_008/0000162
Institucionální podpora: RVO:68378271
Klíčová slova: plasma * acceleration
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
Impakt faktor: 2.288, rok: 2014

The magnetic quadrupole structure formation during the interaction of two ultrashort high power laser pulses with a collisionless plasma is demonstrated with 2.5-dimensional particle-in-cell simulations. The subsequent expansion of the quadrupole is accompanied by magnetic-field annihilation in the ultrarelativistic regime, when the magnetic field cannot be sustained by the plasma current. This results in a dominant contribution of the displacement current exciting a strong large scale electric field. This field leads to the conversion of magnetic energy into kinetic energy of accelerated electrons inside the thin current sheet.
Trvalý link: http://hdl.handle.net/11104/0264920