Analysis of laser ablation: Contribution of ionization energy to the plasma and shock wave properties

2007 ◽  
Vol 102 (4) ◽  
pp. 043103 ◽  
Author(s):  
Sy-Bor Wen ◽  
Xianglei Mao ◽  
Ralph Greif ◽  
Richard E. Russo
Keyword(s):  
Shock Wave ◽  
Laser Ablation ◽  
Ionization Energy ◽  
Wave Properties

Normal shock-wave properties in imperfect air and nitrogen

AIAA Journal ◽  
1965 ◽  
Vol 3 (3) ◽  
pp. 554-556 ◽  
Author(s):  
CLARK H. LEWIS ◽  
E. G. BURGESS
Keyword(s):  
Shock Wave ◽  
Normal Shock ◽  
Normal Shock Wave ◽  
Wave Properties

Comment on ‘Propagation of solitary waves and shock wavelength in the pair plasma (J. Plasma Phys. 78, 525–529, 2012)’

2014 ◽  
Vol 80 (3) ◽  
pp. 513-516
Author(s):  
Frank Verheest
Keyword(s):  
Shock Wave ◽  
Solitary Wave ◽  
Solitary Waves ◽  
Plasma Phys ◽  
Theoretical Underpinning ◽  
Pair Plasma ◽  
Electrons And Positrons ◽  
Small Dissipation ◽  
Pseudopotential Approach ◽  
Wave Properties

In a recent paper ‘Propagation of solitary waves and shock wavelength in the pair plasma (J. Plasma Phys. 78, 525–529, 2012)’, Malekolkalami and Mohammadi investigate nonlinear electrostatic solitary waves in a plasma comprising adiabatic electrons and positrons, and a stationary ion background. The paper contains two parts: First, the solitary wave properties are discussed through a pseudopotential approach, and then the influence of a small dissipation is intuitively sketched without theoretical underpinning. Small dissipation is claimed to lead to a shock wave whose wavelength is determined by linear oscillator analysis. Unfortunately, there are errors and inconsistencies in both the parts, and their combination is incoherent.

Influence of preformed shock wave on the development of picosecond laser ablation plasma

2001 ◽  
Vol 89 (7) ◽  
pp. 4096-4098 ◽  
Author(s):  
Samuel S. Mao ◽  
Xianglei Mao ◽  
Ralph Greif ◽  
Richard E. Russo
Keyword(s):  
Shock Wave ◽  
Laser Ablation ◽  
Picosecond Laser ◽  
Ablation Plasma ◽  
Laser Ablation Plasma

Laser-launched flyer plate and confined laser ablation for shock wave loading: Validation and applications

2008 ◽  
Vol 79 (2) ◽  
pp. 023902 ◽  
Author(s):  
Dennis L. Paisley ◽  
Sheng-Nian Luo ◽  
Scott R. Greenfield ◽  
Aaron C. Koskelo
Keyword(s):  
Shock Wave ◽  
Laser Ablation ◽  
Shock Wave Loading ◽  
Wave Loading ◽  
Flyer Plate

Deburring Effect of Plasma Produced by Nanosecond Laser Ablation

2014 ◽  
Vol 136 (2) ◽  
Author(s):  
Yun Zhou ◽  
Yibo Gao ◽  
Benxin Wu ◽  
Sha Tao ◽  
Ze Liu
Keyword(s):  
Shock Wave ◽  
Laser Ablation ◽  
High Spatial Resolution ◽  
Shape Change ◽  
The Other ◽  
Nanosecond Laser ◽  
Laser Induced Plasma ◽  
Nanosecond Laser Ablation ◽  
Mechanical Breaking ◽  
The Sacrifice

This paper presents an interesting nanosecond (ns) laser-induced plasma deburring (LPD) effect (from microchannel sidewalls) discovered by the authors, which has been rarely reported before in the literature. Fast imagining study has been performed on plasma produced by ns laser ablation of the bottom of microchannels. It has been found that the plasma can effectively remove burrs from the sidewall of the channels, while on the other hand microscopic images taken in this study did not show any obvious size or shape change of the channel sidewall after LPD. LPD using a sacrifice plate has also been studied, where the plasma for deburring is generated by laser ablation of the sacrifice plate instead of the workpiece. The observed laser-induced plasma deburring effect has several potential advantages in practical micromanufacturing applications, such as high spatial resolution, noncontact and no tool wear, and less possibility of damaging or overmachining useful microfeatures when removing burrs from them. The fundamental mechanisms for the observed laser-induced plasma deburring effect still require lots of further work to completely understand, which may include mechanical breaking of burrs due to high kinetic energies carried by plasma and the associated shock wave, and/or thermal transport from plasma to burrs that may cause their heating and phase change, or other mechanisms.

Transient temperature modeling and shock wave observation in confined laser ablation of thin molybdenum films

2013 ◽  
Author(s):  
Matthias Domke ◽  
Jürgen Sotrop ◽  
Stephan Rapp ◽  
Max Börger ◽  
Dominik Felsl ◽  
...  
Keyword(s):  
Shock Wave ◽  
Laser Ablation ◽  
Transient Temperature ◽  
Temperature Modeling ◽  
Wave Observation
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