Collimated Propagation of Fast Electron Beams Accelerated by High-Contrast Laser Pulses in Highly Resistive Shocked Carbon

Vaisseau, X.; Morace, A.; Touati, M.; Nakatsutsumi, M.; Baton, S. D.; Hulin, S.; Nicolaï, Ph.; Nuter, R.; Batani, D.; Beg, F. N.; Breil, J.; Fedosejevs, R.; Feugeas, J.‐L.; Forestier-Colleoni, P.; Fourment, C.; Fujioka, Shinsuke; Giuffrida, L.; Kerr, S.; McLean, H. S.; Sawada, Hiroshi; Tikhonchuk, V. T.; Santos, J. J.

doi:10.1103/physrevlett.118.205001

Cited by 12 publications

(9 citation statements)

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“…Note that the density range is from 1 to -10 g cm 3 and the temperatures from 1 to 10 eV indicating the WDM initial conditions of the transport target. The background electron temperature upon injecting the REB remains below 100 eV for~ps, specifically at the edges of the REB where the resistive gradient field is developing, further justifying the importance of carefully computing the resistivity in WDM for accurate prediction of the REB transport [49,54]. Further details on the hydrodynamic modeling are given in the Methods section.…”

Section: Resultsmentioning

confidence: 99%

“…When comparing the hot electron density and background electron temperature for undriven VC (figures 6(a)-(b)) and for driven VC at D = t 20.5 ns (figures 6(c)-(d)) at early time ( = t 1 ps), we can already notice a significant difference in the REB transport for the two cases. The temperature gradients at the edges of the beam are the location of the strong resistive B-field (see next in figure 7) that will impact the beam propagation [49,54]. Next, we show how it eventually affects the beam at later time (4 ps).…”

Section: Relativistic Electron Transport Modelingmentioning

confidence: 91%

“…Even though some experiments focused on exploring REB transport in samples of initial high resistivity while relatively low density [48,49], they have been done with initially cold solid targets, where the resistivity is far from that in FI conditions. A few among them explored conditions linked to the FI scenario where the REB propagates into shock-heated warm dense matter in Al [50,51] or plastic [52][53][54]. However, 100 J and 1 ps lasers were used, yielded electron beam energy also far from that in FI conditions.…”

Section: Introductionmentioning

confidence: 99%

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Transport of kJ-laser-driven relativistic electron beams in cold and shock-heated vitreous carbon and diamond

et al. 2020

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We report experimental results on relativistic electron beam (REB) transport in a set of cold and shock-heated carbon samples using the high-intensity kilojoule-class OMEGA EP laser. The REB energy distribution and transport were diagnosed using an electron spectrometer and x-ray fluorescence measurements from a Cu tracer buried at the rear side of the samples. The measured rear REB density shows brighter and narrower signals when the targets were shock-heated. Hybrid PIC simulations using advanced resistivity models in the target warm-dense-matter (WDM) conditions confirm this observation. We show that the resistivity response of the media, which governs the selfgenerated resistive fields, is of paramount importance to understand and correctly predict the REB transport.

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Section: Resultsmentioning

confidence: 99%

Section: Relativistic Electron Transport Modelingmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

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Transport of kJ-laser-driven relativistic electron beams in cold and shock-heated vitreous carbon and diamond

et al. 2020

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“…Different strategies to control REB propagation in solid matter have been proposed. They rely on the use of ~kT magnetic fields, which can be externally generated by coils 27,28 or self generated 29 , either by artificial resistivity gradients 30–34 or by exploiting the intrinsically high resistivity of a material 35 . One of the schemes by using self-generated magnetic fields was proposed by A. Robinson et al .…”

Section: Introductionmentioning

confidence: 99%

Enhanced relativistic-electron beam collimation using two consecutive laser pulses

Malko

Vaisseau

Pérez

et al. 2019

Sci Rep

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The double laser pulse approach to relativistic electron beam (REB) collimation in solid targets has been investigated at the LULI-ELFIE facility. In this scheme two collinear laser pulses are focused onto a solid target with a given intensity ratio and time delay to generate REBs. The magnetic field generated by the first laser-driven REB is used to guide the REB generated by a second delayed laser pulse. We show how electron beam collimation can be controlled by properly adjusting the ratio of focus size and the delay time between the two pulses. We found that the maximum of electron beam collimation is clearly dependent on the laser focal spot size ratio and related to the magnetic field dynamics. Cu-Kα and CTR imaging diagnostics were implemented to evaluate the collimation effects on the respectively low energy (≤100 keV) and high energy (≥MeV) components of the REB.

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“…Different strategies to control REB propagation in solid matter have been proposed. They rely on the use of ∼kT magnetic fields, which can be externally generated by coils [184,10] or self generated [20], either by artificial resistivity gradients [110,191,53,185,164] or by exploiting the intrinsically high resistivity of a material [211].…”

Section: Electron Beam Collimation Schemesmentioning

confidence: 99%

Laser-driven charged particle transport in warm dense matter and plasma

Malko¹

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And of course, I would like thank Jon Apiñaniz, my colleague at work and my friend, who become like a brother for me in the last years. Special thanks for his dedication to our common work, patience and for understanding me so well. Furthermore, I would like to thank Dimitri Batani, who was my supervisor during my internship at CELIA, and provided tremendous help for my research in fast electron transport and shock ignition experiments. I also want to thank Witold Cayzac for his huge contribution in the understanding proton stopping power physics presented in this thesis, Javier Honrubia for the help with the fast electron transport modelling, as well as for the support of this research line, and Frederic Perez for the help in the experimental campaign at LULI-ELFIE facility and for PIC simulations of the fast electron source. I also would like to acknowledge Anna Tauschwitz for performing the RALEF2D simulations. My special thanks are for Micha Ehret, who besides being an awesome friend, with whom you can go to the end of the world, is also a great scientist, who helped me a lot in the LULI-ELFIE experimental campaign. I would like to acknowledge my "proton stopping power rangers" team

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Collimated Propagation of Fast Electron Beams Accelerated by High-Contrast Laser Pulses in Highly Resistive Shocked Carbon

Cited by 12 publications

References 50 publications

Transport of kJ-laser-driven relativistic electron beams in cold and shock-heated vitreous carbon and diamond

Transport of kJ-laser-driven relativistic electron beams in cold and shock-heated vitreous carbon and diamond

Enhanced relativistic-electron beam collimation using two consecutive laser pulses

Laser-driven charged particle transport in warm dense matter and plasma

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