Towards laser ion acceleration with holed targets

0537015 - FZÚ 2021 RIV US eng J - Journal Article
Hadjisolomou, Prokopis - Bulanov, Sergey V. - Korn, Georg
Towards laser ion acceleration with holed targets.
Journal of Plasma Physics. Roč. 86, č. 3 (2020), s. 1-23, č. článku 905860304. ISSN 0022-3778. E-ISSN 1469-7807
R&D Projects: GA MŠMT EF15_003/0000449
Grant - others:OP VVV - HiFi(XE) CZ.02.1.01/0.0/0.0/15_003/0000449
Institutional support: RVO:68378271
Keywords : intense particle beams * plasma simulation
OECD category: Particles and field physics
Impact factor: 2.014, year: 2020
Method of publishing: Limited access
https://doi.org/10.1017/S0022377820000379

Although the interaction of a flat foil with currently available laser intensities is now considered a routine process, during the last decade, emphasis has been given to targets with complex geometries aiming at increasing the ion energy. This work presents a target geometry where two symmetric side holes and a central hole are drilled into the foil. A study of the various side-hole and central-hole length combinations is performed with two-dimensional particle-in-cell simulations for polyethylene targets and a laser intensity of 5.2 imes 10^{21} ext{W} ext{cm}^{-2}. The holed targets show a remarkable increase of the conversion efficiency, which corresponds to a different target configuration for electrons, protons and carbon ions. Furthermore, diffraction of the laser pulse leads to a directional high energy electron beam, with a temperature of {sim}40 ext{MeV}, or seven times higher than in the case of a flat foil.
Permanent Link: http://hdl.handle.net/11104/0314774