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DOE OSTI · 22069154

Laser-driven relativistic electron beam interaction with solid dielectric

Sarkisov, G S·Ivanov, V V·Leblanc, P·Sentoku, Y·Yates, K·Wiewior, P·Chalyy, O·Astanovitskiy, A·Bychenkov, V Yu·Jobe, D·Spielman, R B
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Abstract

The multi-frames shadowgraphy, interferometry and polarimetry diagnostics with sub-ps time resolution were used for an investigation of ionization wave dynamics inside a glass target induced by laser-driven relativistic electron beam. Experiments were done using the 50 TW Leopard laser at the UNR. For a laser flux of {approx}2 Multiplication-Sign 10{sup 18}W/cm{sup 2} a hemispherical ionization wave propagates at c/3. The maximum of the electron density inside the glass target is {approx}2 Multiplication-Sign 10{sup 19}cm{sup -3}. Magnetic and electric fields are less than {approx}15 kG and {approx}1 MV/cm, respectively. The electron temperature has a maximum of {approx}0.5 eV. 2D interference phase shift shows the 'fountain effect' of electron beam. The very low ionization inside glass target {approx}0.1% suggests a fast recombination at the sub-ps time scale. 2D PIC-simulations demonstrate radial spreading of fast electrons by self-consistent electrostatic fields.

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70 PLASMA PHYSICS AND FUSION TECHNOLOGY75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITYDIELECTRIC MATERIALSELECTRIC FIELDSELECTRON BEAMSELECTRON DENSITYELECTRON TEMPERATUREFARADAY EFFECTGLASSINTERFEROMETRYION TEMPERATUREIONIZATIONKERR EFFECTPLASMAPLASMA DENSITYPLASMA DIAGNOSTICSPLASMA PRODUCTIONPLASMA SIMULATIONPOLARIMETRYRECOMBINATIONRELATIVISTIC RANGESOLIDS

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Sarkisov, G S, Ivanov, V V, Leblanc, P, Sentoku, Y, Yates, K, Wiewior, P, Chalyy, O, Astanovitskiy, A, Bychenkov, V Yu, Jobe, D, Spielman, R B. 2012-07-30. Laser-driven relativistic electron beam interaction with solid dielectric. https://doi.org/10.1063/1.4739920

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