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The structure of dense particle clouds surrounding ablating hydrogen isotope pellets is investigated, with particular emphasis on the Beta-perpendicular expansion, ionization, and deceleration dynamics. A time-dependent single-temperature two-fluid one and one-half-dimensional Lagrangian model is used in which the neutral and ionized fluid components are allowed to move with different velocities. The expansion of the Lagrangian cells along the magnetic field lines is also taken into account. For given ablation rates, the confinement radii and the radial distributions of the velocities, particle densities, magnetic field strength, temperature, and other flow and field properties are calculated as functions of the background plasma parameters. The calculated cloud parameters are compared with measured data and results stemming from earlier single-velocity models.

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Authors: KRISTOF G, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE);LENGYEL L, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE)
Bibliographic Reference: Article: Physics of Plasmas, Vol. 5 (1998) No. 1, pp. 315-318
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