Nernst effect in laser-produced plasmas

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  • A. Nishiguchi
    Institute of Laser Engineering, Osaka University, Suita Osaka 565, Japan
  • T. Yabe
    Institute of Laser Engineering, Osaka University, Suita Osaka 565, Japan
  • M. G. Haines
    Institute of Laser Engineering, Osaka University, Suita Osaka 565, Japan

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<jats:p>A transverse magnetic field B is found to be convected by the electron heat flux qe because of the Nernst effect, i.e., with a velocity VT(∼2qe/3neTe). The mechanism is clarified by the two-electron-fluid model. In laser-driven ablation the convection is toward the overdense region and B can be amplified by 10–100 times because ∇ ⋅ VT&lt;0, making B/ni almost constant for λmfp&gt;c/ωpe.</jats:p>

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