Abstract
We study the penetration of ultra-intense (intensity Isimeq 1023–24 W/cm2) circularly polarized laser pulses into a thick subcritical plasma layer with accounting for radiation friction. We show that radiation pressure is enhanced due to radiation friction in the direction transverse to the laser pulse propagation, and that for stronger and longer laser pulses this mechanism dominates over the ordinary ponderomotive pressure, thus resulting in a substantionaly stronger charge separation than anticipated previously. We give estimates of the effect and compare them with the results of one and two dimensional particle-in-cell simulations. This effect can be important for laser-based acceleration schemes.
Highlights
A new generation of 10 PW laser facilities (e.g., ELI Beamlines[1], Apollon[2], ELI NP3) will be soon commissioned around the world, providing very strong fields with intensity over 1023 W/cm[2] and dimensionless amplitude a0
The ions are accelerated by a quasistatic electric field arising because of the charge separation created by the laser pulse, for a review and recent experimental results see refs[32,33,34]
In this paper we focus at the impact of radiation friction (RF) on charge separation and longitudinal field generation[35] by circularly polarized (CP) laser pulses propagating in a thick cold plasma with immobile ions
Summary
A new generation of 10 PW laser facilities (e.g., ELI Beamlines[1], Apollon[2], ELI NP3) will be soon commissioned around the world, providing very strong fields with intensity over 1023 W/cm[2] and dimensionless amplitude a0. −e and m are electron charge and mass, ω is the laser carrier frequency, E is the electric field amplitude, and c is the speed of light. The ions are accelerated by a quasistatic electric field arising because of the charge separation created by the laser pulse, for a review and recent experimental results see refs[32,33,34]. In this paper we focus at the impact of RF on charge separation and longitudinal field generation[35] by circularly polarized (CP) laser pulses propagating in a thick (the thickness is higher than the wavelength of the generated plasma wave) cold plasma with immobile ions. Here we apply it to charge separation in a plasma, and demonstrate both analytically and by numerical simulations, that
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
