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Chin. Phys. B, 2008, Vol. 17(4): 1318-1325    DOI: 10.1088/1674-1056/17/4/028
PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES Prev   Next  

Theoretical analysis and numerical simulation of the impulse delivering from laser-produced plasma to solid target

Yang Yan-Nan(杨雁南)a)b), Yang Bo(杨波)b), Zhu Jin-Rong(朱金荣)b)c), Shen Zhong-Hua(沈中华)b), Lu Jian(陆建)b), and Ni Xiao-Wu(倪晓武)b)
a Department of Applied Physics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, Chinab Department of Applied Physics, Nanjing University of Science and Technology, Nanjing 210094, China ; c College of Physics Science and Technology, Yangzhou University, Yangzhou 225002, China
Abstract  A plasma is produced in air by using a high-intensity Q-switch Nd:YAG pulsed laser to irradiate a solid target, and the impulses delivering from the plasma to the target are measured at different laser power densities. Analysing the formation process of laser plasma and the laser supported detonation wave (LSDW) and using fluid mechanics theory and Pirri's methods, an approximately theoretical solution of the impulse delivering from the plasma to the target under our experimental condition is found. Furthermore, according to the formation time of plasma and the variation of pressure in plasma in a non-equilibrium state, a physical model of the interaction between the pulse laser and the solid target is developed. The plasma evolutions with time during and after the laser pulse irradiating the target are simulated numerically by using a three-dimensional difference scheme. And the numerical solutions of the impulse delivering from the plasma to the target are obtained. A comparison among the theoretical, numerical and experimental results and their analyses are performed. The experimental results are explained reasonably. The consistency between numerical results and experimental results implies that the numerical calculation model used in this paper can well describe the mechanical action of the laser on the target.
Keywords:  plasma production and heating by laser beams      solid-plasma interactions      impulse      fluid dynamics simulation  
Received:  10 April 2007      Revised:  28 November 2007      Accepted manuscript online: 
PACS:  42.55.Rz (Doped-insulator lasers and other solid state lasers)  
  52.40.Hf (Plasma-material interactions; boundary layer effects)  
  52.50.Jm (Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.))  
  61.80.Ba (Ultraviolet, visible, and infrared radiation effects (including laser radiation))  
Fund: Project supported by the National Natural Science Foundation of China (Grant No 60578015), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No 20050288025) and the Foundation of the Ministry of Education of China

Cite this article: 

Yang Yan-Nan(杨雁南), Yang Bo(杨波), Zhu Jin-Rong(朱金荣), Shen Zhong-Hua(沈中华), Lu Jian(陆建), and Ni Xiao-Wu(倪晓武) Theoretical analysis and numerical simulation of the impulse delivering from laser-produced plasma to solid target 2008 Chin. Phys. B 17 1318

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