Analysis of rippled shock-wave propagation and ablation-front stability by theory and hydrodynamic simulation

1999 ◽  
Vol 61 (1) ◽  
pp. 43-50 ◽  
Author(s):  
N. MATSUI ◽  
K. MIMA ◽  
M. HONDA ◽  
A. NISHIGUCHI
Keyword(s):  
Shock Wave ◽  
Surface Roughness ◽  
Wave Propagation ◽  
Target Surface ◽  
Shock Wave Propagation ◽  
Hydrodynamic Simulation ◽  
Fluid Equation ◽  
Temporal Behaviour ◽  
Deceleration Phase ◽  
Acceleration And Deceleration

The hydrodynamic start-up problem is one of the most crucial issues in laser-driven symmetrical implosion. The target-surface roughness and initial imprint by nonuniform laser irradiation result in Rayleigh–Taylor instability in the acceleration and deceleration phase. To estimate the tolerance of the target-surface roughness, the temporal behaviour of corrugated ablation surface and rippled shock-wave propagation are investigated using a perturbation analysis of the fluid equation, which is solved under the boundary model of a fire-polished ablation surface. The results show good agreement with two- dimensional hydrodynamic simulation and experimental results [T. Endo et al., Phys. Rev. Lett.74, 3608 (1995)].

scholarly journals Study of laser-driven shock wave propagation in Plexiglas targets

1992 ◽  
Vol 10 (1) ◽  
pp. 201-211 ◽  
Author(s):  
L. J. Dhareshwar ◽  
P. A. Naik ◽  
T. C. Kaushik ◽  
H. C. Pant
Keyword(s):  
Shock Wave ◽  
Wave Propagation ◽  
High Speed ◽  
Second Harmonic ◽  
Optical Probe ◽  
Shock Wave Propagation ◽  
Hydrodynamic Simulation ◽  
One Dimensional ◽  
Laser Beam Irradiation ◽  
Shock Fronts

An experimental study of laser-driven shock wave propagation in a transparent material such as Plexiglas using a high-speed optical shadowgraphy technique is presented in this paper. A Nd:glass laser was used to produce laser intensity in the range 1012-1014 W/cm2 on the target. Optical shadowgrams of the propagating shock front were recorded with a second-harmonic (0.53-μm) optical probe beam. Shock pressures were measured at various laser intensities, and the scaling was found to agree with the theoretically predicted value. Shock pressure values have also been obtained from a one-dimensional Lagrangian hydrodynamic simulation, and they match well with experimental results. Shadowgrams of shock fronts produced by nonuniform spatial laser beam irradiation profiles have shown complete smoothing when targets with a thin coating of a material of high atomic number such as gold were used. Shock pressures in such coated targets are also found to be considerably higher compared with those in uncoated targets.

Phenomenological analysis of shock-wave propagation in weakly ionized plasmas

AIAA Journal ◽  
1998 ◽  
Vol 36 ◽  
pp. 816-822
Author(s):  
Igor V. Adamovich ◽  
Vish V. Subramaniam ◽  
J. W. Rich ◽  
Sergey O. Macheret
Keyword(s):  
Shock Wave ◽  
Wave Propagation ◽  
Phenomenological Analysis ◽  
Shock Wave Propagation ◽  
Ionized Plasmas ◽  
Weakly Ionized

scholarly journals Observation of the shock wave propagation induced by a high-power laser irradiation into an epoxy material

2013 ◽  
Vol 46 (23) ◽  
pp. 235501 ◽  
Author(s):  
Romain Ecault ◽  
Laurent Berthe ◽  
Michel Boustie ◽  
Fabienne Touchard ◽  
Emilien Lescoute ◽  
...  
Keyword(s):  
Shock Wave ◽  
Wave Propagation ◽  
Laser Irradiation ◽  
High Power ◽  
Shock Wave Propagation ◽  
High Power Laser ◽  
Power Laser ◽  
Epoxy Material

scholarly journals Universal shock-wave propagation in one-dimensional Bose fluids

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Romain Dubessy ◽  
Juan Polo ◽  
Hélène Perrin ◽  
Anna Minguzzi ◽  
Maxim Olshanii
Keyword(s):  
Shock Wave ◽  
Wave Propagation ◽  
Shock Wave Propagation ◽  
One Dimensional

Numerical Study of the Shock Wave Propagation in a Micron-Scale Contracting Channel

2011 ◽  
Author(s):  
G. V. Shoev ◽  
Ye. A. Bondar ◽  
D. V. Khotyanovsky ◽  
A. N. Kudryavtsev ◽  
G. Mirshekari ◽  
...  
Keyword(s):  
Shock Wave ◽  
Wave Propagation ◽  
Numerical Study ◽  
Shock Wave Propagation
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