Optical injection dynamics in two laser wakefield acceleration configurations

0522664 - FZÚ 2020 RIV GB eng J - Journal Article
Horný, V. - Mašlárová, D. - Petržílka, V. - Klimo, Ondřej - Kozlová, Michaela - Krůs, Miroslav
Optical injection dynamics in two laser wakefield acceleration configurations.
Plasma Physics and Controlled Fusion. Roč. 60, č. 6 (2018), s. 1-10, č. článku 064009. ISSN 0741-3335. E-ISSN 1361-6587
R&D Projects: GA MŠMT EF15_008/0000162; GA MŠMT LQ1606
Grant - others:ELI Beamlines(XE) CZ.02.1.01/0.0/0.0/15_008/0000162
Institutional support: RVO:68378271
Keywords : optical injection * laser wakefield acceleration * electron bunch * perpendicular injection
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 2.799, year: 2018
Method of publishing: Limited access
https://doi.org/10.1088/1361-6587/aabd07

The injection and acceleration dynamics of electron bunches generated by two different optical injection mechanisms, the injection by an orthogonally crossing pulse with perpendicular polarization and injection by a copropagating preceding pulse, are studied by means of 2D numerical particle-in-cell (PIC) simulations. The effect of the ion cavity (bubble) shape variations induced by injection pulses on the electron bunch formation and observable parameters is explored for early injection and acceleration phases. Even if both schemes have three different injection regions, from which three independent electron sub-bunches emerge, the final merged electron bunch does not exhibit a significant substructure in studied parameters as transverse and longitudinal emittance. The 2D PIC simulations also reveal that the final electron bunch parameters are mainly affected by the spatial charge distribution of individual sub-bunches.

Permanent Link: http://hdl.handle.net/11104/0307118