Kinetics of the collisionless expansion of spherical nanoplasmas

Details Kinetics of the collisionless expansion of spherical nanoplasmas Kinetics of the collisionless expansion of spherical nanoplasmas

2006-04-18

arxiv.org/abs/physics/0604138v1

PHYSICAL REVIEW LETTERS 96, 175002 (2006)

Physics

Plasma Physics

10 pages, 6 figures, to appear in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.96.175002

The collisionless expansion of spherical plasmas composed of cold ions and hot electrons is analyzed using a novel kinetic model, with special emphasis on the influence of the electron dynamics. Simple, general laws are found, relating the relevant expansion features to the initial conditions of the plasma, determined from a single dimensionless parameter. A transition is identified in the behavior of the ion energy spectrum, which is monotonic only for high electron temperatures, otherwise exhibiting a local peak far from the cutoff energy.

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