Short electron bunches generated by perpendicularly crossing laser pulses.

0480437 - ÚFP 2018 RIV US eng J - Článek v odborném periodiku
Horný, Vojtěch - Petržílka, Václav - Klimo, Ondřej - Krůs, Miroslav
Short electron bunches generated by perpendicularly crossing laser pulses.
Physics of Plasmas. Roč. 24, č. 10 (2017), č. článku 103125. ISSN 1070-664X. E-ISSN 1089-7674
Grant CEP: GA MŠMT(CZ) LM2015083; GA MŠMT(CZ) CZ.02.1.01/0.0/0.0/16_013/0001552; GA ČR GA15-03118S; GA MŠMT(CZ) LD14089; GA MŠMT LQ1606
Grant ostatní: ELI Beamlines(XE) CZ.02.1.01/0.0/0.0/15_008/0000162
Institucionální podpora: RVO:61389021 ; RVO:68378271
Klíčová slova: Laser pulses * Particle beam bunching * Plasma simulation * Particle acceleration * Lasers * Particle-in-cell metthod * Particle beams * Electrostatics
Obor OECD: Fluids and plasma physics (including surface physics)
Impakt faktor: 1.941, rok: 2017
http://aip.scitation.org/doi/10.1063/1.5007889

Optical injection of electrons into a laser wakefield accelerator by a low intensity orthogonally colliding laser pulse is investigated using 2D particle-in-cell simulations. The collision of the main laser pulse driving the plasma wave in the cavitated regime and the low intensity injection pulse affects the trajectories of electrons in the crossing region. As a consequence, some electrons are ejected into the front part of the bubble, and these electrons are subsequently trapped in the rear part of the bubble. The injected and accelerated electron bunch reaches a peak energy of 630MeV after 8 ps of acceleration being as short as 7.0 fs and is quasimonoenergetic with a low energy spread of 20MeV
(3.8%), having a charge of several dozens of pC and a relatively large emittance of 2.27 pí . mm . mrad.Two main injection mechanisms—crossing beatwave injection and injection by laser field preacceleration—were identified.
Trvalý link: http://hdl.handle.net/11104/0276641