Creation of an axially uniform plasma channel in a laser-assisted capillary discharge

0547111 - FZÚ 2022 RIV US eng J - Journal Article
Bagdasarov, G.A. - Bobrova, N. A. - Olkhovskaya, O.G. - Gasilov, V.A. - Benedetti, C. - Bulanov, S.S. - Gonsalves, A.J. - Pieronek, C.V. - van Tilborg, J. - Geddes, C.G.R. - Schroeder, C.B. - Sasorov, Pavel - Bulanov, Sergey V. - Korn, Georg - Esarey, E.
Creation of an axially uniform plasma channel in a laser-assisted capillary discharge.
Physics of Plasmas. Roč. 28, č. 5 (2021), č. článku 053104. ISSN 1070-664X. E-ISSN 1089-7674
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 : cappilary discharge plasma * laser pulse guding * mhd computer simulations
OECD category: Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Impact factor: 2.357, year: 2021
Method of publishing: Limited access
https://doi.org/10.1063/5.0046428

Dissipative capillary discharges form plasma channels which allow for high power laser guiding, enabling efficient electron acceleration in a laser wakefield accelerator. However, at the low plasma densities required to produce high-energy electrons, in order to avoid capillary wall damage, high power lasers need a tighter transverse confinement that cannot be achieved by the capillary discharge powered by Ohmic heating alone. The introduction of an additional laser for heating of the plasma leads to deeper and narrower plasma channels. Here we investigate the formation of laser-heated axially uniform plasma channels. We show that a high degree of longitudinal uniformity can be achieved despite significant evolution of the heater laser during its propagation through the channel.
Permanent Link: http://hdl.handle.net/11104/0323452