Phys. Rev. Lett. 100, 125002 (2008) [4 pages]
Laser Channeling in Millimeter-Scale Underdense Plasmas of Fast-Ignition Targets
Abstract
References (22)
Citing Articles
G. Li, 1 R. Yan, 1 and C. Ren1,21Department of Mechanical Engineering and Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14627, USA
2Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, USAT.-L. Wang, 4 J. Tonge, 3 and W. B. Mori3,43Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
4Department of Electrical Engineering, University of California, Los Angeles, California 90095, USA
Received 27 July 2007; published 24 March 2008
Two dimensional particle-in-cell simulations show that laser channeling in millimeter-scale underdense plasmas is a highly nonlinear and dynamic process involving longitudinal plasma buildup, laser hosing, channel bifurcation and self-correction, and electron heating to relativistic temperatures. The channeling speed is much less than the linear group velocity of the laser. The simulations find that low-intensity channeling pulses are preferred to minimize the required laser energy but with an estimated lower bound on the intensity of I![[approximate]](http://scitation.aip.org/stockgif3/ap.gif) 5×1018 W/cm2 if the channel is to be established within 100 ps. The channel is also shown to significantly increase the transmission of an ignition pulse.
©2008 The American Physical Society
| URL: |
http://link.aps.org/doi/10.1103/PhysRevLett.100.125002
|
| DOI: |
10.1103/PhysRevLett.100.125002 |
| PACS: |
52.57.Kk;
52.38.Hb;
52.65.Rr
|
REFERENCES (22)
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