Surface waves and electron acceleration from high-power, kilojoule-class laser interactions with underdense plasma

Willingale, L. and Thomas, A. G. R. and Nilson, P. M. and Chen, H. and Cobble, J. and Craxton, R. S. and Maksimchuk, A. and Norreys, P. A. and Sangster, T. C. and Scott, R. H. H. and Stoeckl, C. and Zulick, C. and Krushelnick, K. (2013) Surface waves and electron acceleration from high-power, kilojoule-class laser interactions with underdense plasma. New Journal of Physics, 15. ISSN 1367-2630

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Abstract

Experiments were performed on the Omega EP laser facility to study laser pulse propagation, channeling phenomena and electron acceleration from high-intensity, high-power laser interactions with underdense plasma. A CH plasma plume was used as the underdense target and the interaction of the laser pulse channeling through the plasma was imaged using proton radiography. High-energy electron spectra were measured for different experimental laser parameters. Structures observed along the channel walls are interpreted as having developed from surface waves, which are likely to serve as an injection mechanism of electrons into the cavitated channel for acceleration via direct laser acceleration mechanisms. Two-dimensional particle-in-cell simulations give good agreement with these channeling and electron acceleration phenomena.

Item Type:
Journal Article
Journal or Publication Title:
New Journal of Physics
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
79644
Deposited By:
Deposited On:
19 May 2016 13:32
Refereed?:
Yes
Published?:
Published
Last Modified:
23 Sep 2020 02:50