| Issue |
J. Phys. IV France
Volume 133, June 2006
|
|
|---|---|---|
| Page(s) | 253 - 257 | |
| DOI | https://doi.org/10.1051/jp4:2006133051 | |
| Published online | 16 June 2006 | |
Inertial Fusion Sciences and Applications 2005
J.-C. Gauthier, et al.
J. Phys. IV France 133 (2006) 253-257
DOI: 10.1051/jp4:2006133051
1 Los Alamos National Laboratory, Los Alamos, NM 87545, USA
2 Dept. of Physics and Astronomy, University of Iowa, Iowa City, IA 52242, USA
© EDP Sciences 2006
J.-C. Gauthier, et al.
J. Phys. IV France 133 (2006) 253-257
DOI: 10.1051/jp4:2006133051
Particle-in-cell studies of laser-driven hot spots and a statistical model for mesoscopic properties of Raman backscatter
B.J. Albright1, W. Daughton2, L. Yin1, K.J. Bowers1, J.L. Kline1, D.S. Montgomery1 and J.C. Fernández11 Los Alamos National Laboratory, Los Alamos, NM 87545, USA
2 Dept. of Physics and Astronomy, University of Iowa, Iowa City, IA 52242, USA
Abstract
The authors use explicit particle-in-cell simulations to model stimulated scattering processes
in media with both solitary and multiple laser hot spots. These simulations indicate
coupling among hot spots, whereby
scattered light, plasma waves, and hot electrons generated in one laser hot spot may propagate
to neighboring hot spots, which can be destabilized to enhanced backscatter. A nonlinear statistical
model of a stochastic beam exhibiting this coupled behavior is described here. Calibration
of the model using particle-in-cell simulations is performed, and a threshold is derived for
"detonation" of the beam to high reflectivity.
© EDP Sciences 2006