TITLE

Creation of persistent, straight, 2 mm long laser driven channels in underdense plasmas

AUTHOR(S)
Sarri, G.; Lancaster, K. L.; Trines, R.; Clark, E. L.; Hassan, S.; Jiang, J.; Kageiwa, N.; Lopes, N.; Ramis, R.; Rehman, A.; Ribeyre, X.; Russo, C.; Scott, R. H. H.; Tanimoto, T.; Temporal, M.; Borghesi, M.; Davies, J. R.; Najmudin, Z.; Tanaka, K. A.; Tatarakis, M.
PUB. DATE
November 2010
SOURCE
Physics of Plasmas;Nov2010, Vol. 17 Issue 11, p113303
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The experimental study of the behavior of deuterium plasma with densities between 2×1018 and 2×1020 cm-3, subjected to a 6 TW, 30 ps, 3×1018 W cm-2 laser pulse, is presented. Conclusive experimental proof that a single straight channel is generated when the laser pulse interacts with the lowest densities is provided. This channel shows no small-scale longitudinal density modulations, extends up to 2 mm in length and persists for up to 150 ps after the peak of the interaction. Bifurcation of the channel after 1 mm propagation distance is observed for the first time. For higher density interactions, above the relativistic self-focusing threshold, bubblelike structures are observed to form at late times. These observations have implications for both laser wakefield accelerators and fast ignition inertial fusion studies.
ACCESSION #
55509460

 

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