Two-dimensional hydrodynamic simulations of a laser heated gas target plasma

1979 ◽  
Vol 57 (4) ◽  
pp. 514-521 ◽  
Author(s):  
R. D. Milroy ◽  
C. E. Capjack ◽  
J. N. McMullin ◽  
C. R. James
Keyword(s):  
Computer Simulation ◽  
Shock Front ◽  
Laser Heating ◽  
Characteristic Scale ◽  
Two Dimensional ◽  
Heated Region ◽  
Hydrodynamic Simulations ◽  
Gas Target ◽  
Target Plasma ◽  
Laser Heated

The CO2 laser heating and the resulting hydrodynamic expansion of a gas target plasma is examined by means of a two-dimensional computer simulation. These plasmas are found to exhibit characteristic scale lengths of the order of 1 mm. Electron temperatures vary up to about 200 eV whereas ion temperatures vary up to about 50 eV. Electron density is found to vary all the way from above critical in a shock front to well below critical in the laser heated region behind the shock.

scholarly journals Two‐Dimensional Multiangle, Multigroup Neutrino Radiation‐Hydrodynamic Simulations of Postbounce Supernova Cores

2008 ◽  
Vol 685 (2) ◽  
pp. 1069-1088 ◽  
Author(s):  
Christian D. Ott ◽  
Adam Burrows ◽  
Luc Dessart ◽  
Eli Livne
Keyword(s):  
Two Dimensional ◽  
Hydrodynamic Simulations ◽  
Neutrino Radiation

Computer simulation of energy trapping on a two-dimensional square lattice

Langmuir ◽  
1991 ◽  
Vol 7 (11) ◽  
pp. 2788-2793 ◽  
Author(s):  
Masahiko. Sisido ◽  
Hiroki. Sasaki ◽  
Yukio. Imanishi
Keyword(s):  
Computer Simulation ◽  
Square Lattice ◽  
Two Dimensional ◽  
Energy Trapping

scholarly journals Spheroidization of Nickel Powder and Coating with Carbon Layer through Laser Heating

Materials ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 1641 ◽  
Author(s):  
Shuang Li ◽  
Yu-Ling Shao ◽  
Lan Cui ◽  
Sergei Kulinich ◽  
Xi-Wen Du
Keyword(s):  
Laser Heating ◽  
Nickel Powder ◽  
Carbon Layer ◽  
Liquid Droplets ◽  
Pure Ethanol ◽  
Precipitation Mechanism ◽  
Excess Carbon ◽  
Lower Solubility ◽  
Long Pulse ◽  
Laser Heated

We developed a simple and efficient process, laser heating of nickel powder in ethanol, to produce carbon-encapsulated nickel microspheres. Long-pulse-width laser heated nickel powder suspended in pure ethanol into liquid droplets. In turn, the latter droplets became sphere-like, pyrolyzed surrounding ethanol and dissolved the produced carbon atoms. Because of their lower solubility in solid nickel, excess carbon atoms were then expelled from the metal core after solidification, thus forming graphite-like shells on the laser-modified Ni spheres. Hence, after pyrolysis the transformation of carbon was found to follow the dissolution-precipitation mechanism. The produced carbon-encapsulated nickel microspheres exhibited higher oxidation resistance compared with the initial nickel powder, while keeping their magnetic properties essentially unchanged.

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