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arXiv · 1204.2307

Plasma adiabatic lapse rate

Peter Amendt·Claudio Bellei·Scott Wilks
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Abstract

The plasma analog of an adiabatic lapse rate (or temperature variation with height) in atmospheric physics is obtained. A new source of plasma temperature gradient in a binary ion species mixture is found that is proportional to the concentration gradient and difference in average ionization states . Application to inertial-confinement-fusion implosions indicates a potentially strong effect in plastic (CH) ablators that is not modeled with mainline (single-fluid) simulations. An associated plasma thermodiffusion coefficient is derived, and charge-state diffusion in a single-species plasma is also predicted.

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Peter Amendt, Claudio Bellei, Scott Wilks. 2012-04-11. Plasma adiabatic lapse rate. https://doi.org/10.1103/physrevlett.109.075002

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