Highly-collimated, high-charge and broadband MeV electron beams produced by magnetizing solids irradiated by high-intensity lasers

Bolaños S.; Béard J.; Revet G.; Chen S. N.; Pikuz S.; Filippov E.; Safronova M.; Cerchez M.; Willi O.; Starodubtsev M.; Fuchs J.

doi:10.1063/1.5082330

Volume 4 Issue 4

Jul. 2019

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Bolaños S., Béard J., Revet G., Chen S. N., Pikuz S., Filippov E., Safronova M., Cerchez M., Willi O., Starodubtsev M., Fuchs J.. Highly-collimated, high-charge and broadband MeV electron beams produced by magnetizing solids irradiated by high-intensity lasers[J]. Matter and Radiation at Extremes, 2019, 4(4): 044401. doi: 10.1063/1.5082330

Citation:

Bolaños S., Béard J., Revet G., Chen S. N., Pikuz S., Filippov E., Safronova M., Cerchez M., Willi O., Starodubtsev M., Fuchs J.. Highly-collimated, high-charge and broadband MeV electron beams produced by magnetizing solids irradiated by high-intensity lasers[J]. Matter and Radiation at Extremes, 2019, 4(4): 044401. doi: 10.1063/1.5082330

Citation:

Bolaños S., Béard J., Revet G., Chen S. N., Pikuz S., Filippov E., Safronova M., Cerchez M., Willi O., Starodubtsev M., Fuchs J.. Highly-collimated, high-charge and broadband MeV electron beams produced by magnetizing solids irradiated by high-intensity lasers[J]. Matter and Radiation at Extremes, 2019, 4(4): 044401. doi: 10.1063/1.5082330

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Highly-collimated, high-charge and broadband MeV electron beams produced by magnetizing solids irradiated by high-intensity lasers

doi: 10.1063/1.5082330

Bolaños S.^1
,,
Béard J.^2
,,
Revet G.^{1, 3
,},
Chen S. N.^{1, 3, 4
,},
Pikuz S.^{5, 6
,},
Filippov E.^{5, 6
,},
Safronova M.³,
Cerchez M.⁷,
Willi O.⁷,
Starodubtsev M.³,
Fuchs J.^{1, 3, 4
,
,}

1.
LULI—CNRS, Ecole Polytechnique, CEA: Université Paris-Saclay; UPMC Univ Paris 06: Sorbonne Universités, F-91128 Palaiseau Cedex, France
2.
LNCMI, UPR 3228, CNRS-UGA-UPS-INSA, 31400 Toulouse, France
3.
Institute of Applied Physics, 46 Ulyanov Street, 603950 Nizhny Novgorod, Russian Federation
4.
ELI-NP, “Horia Hulubei” National Institute for Physics and Nuclear Engineering, 30 Reactorului Street, RO-077125 Bucharest-Magurele, Romania
5.
Joint Institute for High Temperatures, RAS, 125412 Moscow, Russian Federation
6.
National Research Nuclear University MEPhI, 115409 Moscow, Russian Federation
7.
Institute for Laser and Plasma Physics, University of Düsseldorf, Düsseldorf, Germany

Received Date: 2018-11-20
Accepted Date: 2019-03-12

Available Online: 2021-04-15

Publish Date: 2019-07-15

Abstract

Abstract

Laser irradiation of solid targets can drive short and high-charge relativistic electron bunches over micron-scale acceleration gradients. However, for a long time, this technique was not considered a viable means of electron acceleration due to the large intrinsic divergence (∼50° half-angle) of the electrons. Recently, a reduction in this divergence to 10°–20° half-angle has been obtained, using plasma-based magnetic fields or very high contrast laser pulses to extract the electrons into the vacuum. Here we show that we can further improve the electron beam collimation, down to ∼1.5° half-angle, of a high-charge (6 nC) beam, and in a highly reproducible manner, while using standard stand-alone 100 TW-class laser pulses. This is obtained by embedding the laser-target interaction in an external, large-scale (cm), homogeneous, extremely stable, and high-strength (20 T) magnetic field that is independent of the laser. With upcoming multi-PW, high repetition-rate lasers, this technique opens the door to achieving even higher charges (>100 nC).

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References(67)

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