https://doi.org/10.1051/epjconf/20135906005
Development of laser ablation plasma by anisotropic self-radiation
1 Department of Aerospace Engineering, Tohoku University, 6-6-01 Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-8579, Japan
2 Institute for Laser Technology, 2-6 Yamadaoka, Suita, Osaka 565-0871, Japan
a e-mail: ohnishi@rhd.mech.tohoku.ac.jp
Published online: 15 November 2013
We have proposed a method for reproducing an accurate solution of low-density ablation plasma by properly treating anisotropic radiation. Monte-Carlo method is employed for estimating Eddington tensor with limited number of photon samples in each fluid time step. Radiation field from ablation plasma is significantly affected by the anisotropic Eddington tensor. Electron temperature around the ablation surface changes with the radiation field and is responsible for the observed emission. An accurate prediction of the light emission from the laser ablation plasma requires a careful estimation of the anisotropic radiation field.
© Owned by the authors, published by EDP Sciences, 2013
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