Two-fluid magnetohydrodynamic simulation of confinement of pellet-produced hydrogen clouds in hot magnetized plasmas
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.
Bibliographic Reference: Article: Physics of Plasmas, Vol. 5 (1998) No. 1, pp. 315-318
Record Number: 199810300 / Last updated on: 1998-03-09
Original language: en
Available languages: en