Simulation of laser interaction with ablative plasma and hydrodynamic behavior of laser supported plasma

Journal Article · Mon Jan 28 00:00:00 EST 2013 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4788767· OSTI ID:22102231

Huifeng, Tong; Hong, Yuan ^[1]; Zhiping, Tang ^[2]

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1. Institute of Fluid Physics, Chinese Academy of Engineering Physics, P.O. Box 919-101, Mianyang, Sichuan 621900 (China)
2. CAS Key Laboratory for Mechanical Behavior and Design of Materials, Department of Mechanics and Mechanical Engineering, University of Science and Technology of China, Hefei 230026 (China)

When an intense laser beam irradiates on a solid target, ambient air ionizes and becomes plasma, while part of the target rises in temperature, melts, vaporizes, ionizes, and yet becomes plasma. A general Godunov finite difference scheme WENO (Weighted Essentially Non-Oscillatory Scheme) with fifth-order accuracy is used to simulate 2-dimensional axis symmetrical laser-supported plasma flow field in the process of laser ablation. The model of the calculation of ionization degree of plasma and the interaction between laser beam and plasma are considered in the simulation. The numerical simulations obtain the profiles of temperature, density, and velocity at different times which show the evolvement of the ablative plasma. The simulated results show that the laser energy is strongly absorbed by plasma on target surface and that the velocity of laser supported detonation (LSD) wave is half of the ideal LSD value derived from Chapman-Jouguet detonation theory.

• OSTI ID: 22102231
• Journal Information: Journal of Applied Physics, Vol. 113, Issue 4; Other Information: (c) 2013 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
ABLATION
ACCURACY
COMPUTERIZED SIMULATION
DENSITY
DETONATION WAVES
ELECTRON TEMPERATURE
EXPLOSIONS
FINITE DIFFERENCE METHOD
HYDRODYNAMICS
ION TEMPERATURE
LASER RADIATION
LIGHT TRANSMISSION
PLASMA
PLASMA DENSITY
PLASMA SIMULATION
SURFACES