Generation of hemispherical fast electron waves in the presence of preplasma in ultraintense laser-matter interaction

0439180 - FZÚ 2015 RIV US eng J - Journal Article
Yang, H.X. - Ma, Y.Y. - Xu, H. - Shao, F.Q. - Yu, M.Y. - Yin, Y. - Zhuo, H.B. - Borghesi, Marco
Generation of hemispherical fast electron waves in the presence of preplasma in ultraintense laser-matter interaction.
Laser and Particle Beams. Roč. 31, č. 3 (2013), s. 379-386. ISSN 0263-0346. E-ISSN 1469-803X
R&D Projects: GA MŠMT ED1.1.00/02.0061; GA MŠMT EE2.3.20.0279
Grant - others:ELI Beamlines(XE) CZ.1.05/1.1.00/02.0061; LaserZdroj (OP VK 3)(XE) CZ.1.07/2.3.00/20.0279
Institutional support: RVO:68378271
Keywords : betatron resonance * electron plasma waves * ponderomotive force * preplasma
Subject RIV: BL - Plasma and Gas Discharge Physics
Impact factor: 1.701, year: 2013

Hemispherical electron plasma waves generated from ultraintense laser interacting with a solid target having a subcritical preplasma is studied using particle-in-cell simulation. As the laser pulse propagates inside the preplasma, it becomes selffocused due to the response of the plasma electrons to the ponderomotive force. The electrons are mainly heated via betatron resonance absorption and their thermal energy can become higher than the ponderomotive energy. The hot electrons easily penetrate through the thin solid target and appear behind it as periodic hemispherical shell-like layers separated by the laser wavelength.
Permanent Link: http://hdl.handle.net/11104/0242474