scholarly journals Studies of laser-plasma interaction physics with low-density targets for direct-drive inertial confinement schemes

2019 ◽  
Vol 4 (4) ◽  
pp. 045402 ◽  
Author(s):  
V. Tikhonchuk ◽  
Y. J. Gu ◽  
O. Klimo ◽  
J. Limpouch ◽  
S. Weber
Keyword(s):  
Laser Plasma ◽  
Inertial Confinement ◽  
Low Density ◽  
Direct Drive ◽  
Plasma Interaction ◽  
Laser Plasma Interaction

scholarly journals Laser-plasma interaction in direct-drive inertial confinement fusion

2016 ◽  
Vol 717 ◽  
pp. 012040 ◽  
Author(s):  
J F Myatt ◽  
J Shaw ◽  
V N Goncharov ◽  
J Zhang ◽  
A V Maximov ◽  
...  
Keyword(s):  
Laser Plasma ◽  
Inertial Confinement Fusion ◽  
Inertial Confinement ◽  
Direct Drive ◽  
Plasma Interaction ◽  
Laser Plasma Interaction ◽  
Confinement Fusion

scholarly journals Suppression of stochastic pulsation in laser–plasma interaction by smoothing methods

1993 ◽  
Vol 11 (1) ◽  
pp. 177-184 ◽  
Author(s):  
M. Aydin ◽  
H. Hora
Keyword(s):  
Laser Plasma ◽  
Fusion Energy ◽  
Laser Interaction ◽  
Direct Drive ◽  
Question Mark ◽  
Plasma Interaction ◽  
Laser Plasma Interaction ◽  
Smoothing Methods ◽  
Plasma Corona ◽  
Interaction Problem

Smoothing of laser-plasma interaction by ISI, RPP, SSD, etc. was mainly directed to overcome lateral nonuniformity of irradiation. While these problems are in no way less important, we derived numerically the model of the Laue rippling and hydrorelaxation model for explanation of the measured temporal pulsation in the 10- to 40-ps range and how the smoothing schemes suppress these pulsations. The partial standing wave fields of the normally coherent laser-irradiated plasma corona is then suppressed by smoothing and conclusion for tests for this model, e.g., by the “question mark experiment” is given. The result provides a physics solution of the laser interaction problem for direct-drive inertial fusion energy

scholarly journals Pulsation of laser–plasma interaction explained by density ripple buildup and relaxation for understanding smoothing by random-phase plate, ISI, and broadband

1991 ◽  
Vol 9 (2) ◽  
pp. 381-395 ◽  
Author(s):  
Gu Min ◽  
H. Hora
Keyword(s):  
Laser Plasma ◽  
Laser Field ◽  
Bragg Reflection ◽  
Random Phase ◽  
Turnaround Time ◽  
Phase Plate ◽  
Direct Drive ◽  
Plasma Interaction ◽  
Laser Plasma Interaction ◽  
Plasma Corona

In recent years experimental results about the pulsation of reflectivity or 3ω/2 harmonics from laser-irradiated plasma with a period of 10–20 ps initiated a reconsideration of a broad field of phenomena of laser-plasma interaction. We present here numerical results from a very general hydrodynamic computation showing that the pulsation is due to a standing-wave-produced density ripple in the widespread plasma corona causing these after 2 ps at Laue-Bragg reflection at very low density, followed by a hydrodynamic relaxation of the ripple. This cycle has a turnaround time of about 6–10 ps and immediately explains the observation of pulsation. The suppression of pulsation and the achievement of smooth direct drive is then understood by a washing-out process of the ripples when using the random-phase plate (RPP) or broadband irradiation, or by just preventing the buildup of the ripple at the induced spatial incoherence (ISI), where coherence of the laser field is 1 or 2 ps only.

Laser-plasma interaction in experiments with low-density volume-structured media on the

2003 ◽  
Author(s):  
Alexey E. Bugrov ◽  
Igor N. Burdonskiy ◽  
Ildar K. Fasakhov ◽  
Valeriy V. Gavrilov ◽  
Alexander Y. Goltsov ◽  
...  
Keyword(s):  
Laser Plasma ◽  
Low Density ◽  
Plasma Interaction ◽  
Laser Plasma Interaction ◽  
Structured Media
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