Electron Acceleration by a Laser Pulse with a Rising Propagation Speed

Du, Chao; Xu, Zhizhan

doi:10.1071/p98086

Cited by 1 publication

(1 citation statement)

References 7 publications

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“…(4) was given by momentum conservation for the non-transient case (∂/∂t = 0) and for the transient case of symmetry of the terms [29] and from the gauge and Lorentz invariance [30] . The success in applying of this nonlinear force for the acceleration of electrons by lasers in vacuum was shown in details [31,32,33,34] . For the correct interpretation it is necessary to mention that Kelvin's Pondero-motive force is identical with the nonlinear Schlüter term [35] : j•∇(1/n e ) jm/e 2 = (ω p 2 /ω 2 ) E•∇E/4π (6) remembering the definition of the electric polarization P and Eq.…”

Section: The Initial Motivation For the Technique Of Beam Smoothingmentioning

confidence: 99%

Suppression of Instabilities and Stochastic Pulsation at Laser-Plasma Interaction by Beam Smoothing

Osman¹,

Hora²

2004

American J. of Applied Sciences

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The key problem of direct drive laser fusion is the appearance of parametric instabilities, stochastic pulsation, self-focusing (filamentation) and other anomalies. During the long years studies, the empirical and intuitively developed methods for smoothing of the laser beam were rather successful but a transparent understanding of the physics has still to be found. The first theory how the instabilities are reduced by smoothing was given recently by using PIG simulation while the suppression of the 10-picosecond stochastic pulsation by broadband laser beams was analyzed by the genuine two fluid models. A synoptic evaluation of these results is presented here where the correlation between the instabilities with the pulsation is evident. This opens new ways for direct drive laser fusion with the fundamental red laser light avoiding expensive and because of crystal defects - unsolved problems with higher harmonic production

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Section: The Initial Motivation For the Technique Of Beam Smoothingmentioning

confidence: 99%

Suppression of Instabilities and Stochastic Pulsation at Laser-Plasma Interaction by Beam Smoothing

Osman¹,

Hora²

2004

American J. of Applied Sciences

View full text Add to dashboard Cite

show abstract

Electron Acceleration by a Laser Pulse with a Rising Propagation Speed

Abstract: The acceleration of an electron by a circularly polarised laser pulse propagating at a time-rising speed in a plasma is studied. The limitation on the electron energy gain due to dephasing may disappear. The characteristics of this non-dephasing direct acceleration scheme are analysed.

Cited by 1 publication

References 7 publications

Suppression of Instabilities and Stochastic Pulsation at Laser-Plasma Interaction by Beam Smoothing

Suppression of Instabilities and Stochastic Pulsation at Laser-Plasma Interaction by Beam Smoothing

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