Scaling laws for direct laser acceleration in a radiation-reaction dominated regime

Jirka, Martin; Vranić, Marija; Grismayer, Thomas; Silva, L O

doi:10.1088/1367-2630/aba653

Cited by 23 publications

(21 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For efficient acceleration with this mechanism it is necessary for the electrons to stay in phase with the accelerating parts of the laser field for as long as possible. A discussion of parameters relevant for DLA can be found in [17]. The acceleration of electrons via DLA over a significant period of time can be ruled out in the presented results, as the final electron energies would need to be orders of magnitude larger.…”

Section: Theorymentioning

confidence: 93%

Spatial profile of accelerated electrons from ponderomotive scattering in hydrogen cluster targets

Aurand,

Reichwein,

Schwind

et al. 2021

Preprint

View full text Add to dashboard Cite

We study the laser-driven acceleration of electrons from overdense hydrogen clusters to energies of up to 13 MeV in laser forward direction and several hundreds of keV in an outer ring-like structure. The use of cryogenic hydrogen allows for high repetition-rate operation and examination of the influence of source parameters like temperature and gas flow. The outer ring-like structure of accelerated electrons, originating from the interaction, that is robust against the change of laser and target parameters can be observed for low electron densities of ca. 3×10 16 cm −3 . For higher electron densities, an additional central spot of electrons in the laser forward direction can be observed. Utilizing 3D-PIC simulations, it is revealed that both electron populations mainly stem from ponderomotive scattering.

show abstract

Section: Theorymentioning

confidence: 93%

Spatial profile of accelerated electrons from ponderomotive scattering in hydrogen cluster targets

Aurand,

Reichwein,

Schwind

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…In this regime the radiated photons carry a substantial fraction of the radiating electron's energy, which will modify the microphysics of the interacting system and may result in the breakdown of the derived scaling laws. Several publications have recently begun describing the effects of radiation reaction on direct laser acceleration in this regime [7,24], which will provide a basis for future extensions of the radiation scaling laws derived here.…”

Section: Interpretation Of Scaling Lawsmentioning

confidence: 99%

Relativistically transparent magnetic filaments: scaling laws, initial results and prospects for strong-field QED studies

Rinderknecht,

Wang,

Garcia

et al. 2021

Preprint

View full text Add to dashboard Cite

Relativistic transparency enables volumetric laser interaction with overdense plasmas and direct laser acceleration of electrons to relativistic velocities. The dense electron current generates a magnetic filament with field strength of the order of the laser amplitude (>10 5 T). The magnetic filament traps the electrons radially, enabling efficient acceleration and conversion of laser energy into MeV photons by electron oscillations in the filament. The use of microstructured targets stabilizes the hosing instabilities associated with relativistically transparent interactions, resulting in robust and repeatable production of this phenomenon. Analytical scaling laws are derived to describe the radiated photon spectrum and energy from the magnetic filament phenomenon in terms of the laser intensity, focal radius, pulse duration, and the plasma density. These scaling laws are compared to 3-D particle-in-cell (PIC) simulations, demonstrating agreement over two regimes of focal radius. Preliminary experiments to study this phenomenon at moderate intensity (a 0 ∼ 30) were performed on the Texas Petawatt Laser. Experimental signatures of the magnetic filament phenomenon are observed in the electron and photon spectra recorded in a subset of these experiments that is consistent with the experimental design, analytical scaling and 3-D PIC simulations. Implications for future experimental campaigns are discussed.

show abstract

“…Direct laser acceleration is suitable for longer laser pulses interacting with slightly underdense plasma which results in nC-class electron bunches [20][21][22] with a duration comparable with the accelerating laser pulse duration [23]. Electron bunches carrying a charge up to µC level, but of the duration in the order of picoseconds or longer can be generated via the self-modulated laser wakefield acceleration regime employing high energy laser systems, as it was recently shown at OMEGA [24].…”

Section: Introductionmentioning

confidence: 99%

Generation of single attosecond relativistic electron bunch from intense laser interaction with a nanosphere

Horný

Veisz

2021

Plasma Phys. Control. Fusion

View full text Add to dashboard Cite

Ultrahigh-intensity laser-plasma physics provides unique light and particle beams as well as novel physical phenomena. A recently available regime is based on the interaction between a relativistic intensity few-cycle laser pulse and a sub-wavelength-sized mass-limited plasma target. Here, we investigate the generation of electron bunches under these extreme conditions by means of particle-in-cell simulations. In a first step, up to all electrons are expelled from the nanodroplet and gain relativistic energy from time-dependent local field enhancement at the surface. After this ejection, the electrons are further accelerated as they copropagate with the laser pulse. As a result, a few, or under specific conditions isolated, pC-class relativistic attosecond electron bunches are generated with laser pulse parameters feasible at state-of-the-art laser facilities. This is particularly interesting for some applications, such as generation of attosecond x-ray pulses via Thomson backscattering.

show abstract

Scaling laws for direct laser acceleration in a radiation-reaction dominated regime

Cited by 23 publications

References 56 publications

Spatial profile of accelerated electrons from ponderomotive scattering in hydrogen cluster targets

Spatial profile of accelerated electrons from ponderomotive scattering in hydrogen cluster targets

Relativistically transparent magnetic filaments: scaling laws, initial results and prospects for strong-field QED studies

Generation of single attosecond relativistic electron bunch from intense laser interaction with a nanosphere

Contact Info

Product

Resources

About