Plasma formation and the implosion phase of wire array z-pinch experiments
نویسندگان
چکیده
منابع مشابه
Steady-state radiation ablation in the wire-array Z pinch
The mass ablation phase of a wire-array Z pinch is investigated using steady-state r , simulations. By identifying the dominant physical mechanisms governing the ablation process, a simple scaling relation is derived for the mass ablation rate ṁ with drive current I, in the case where radiation is the primary energy transport mechanism to the wire core. In order to investigate the dependence of...
متن کاملImplosion dynamics and x-ray generation in small-diameter wire-array Z pinches.
It is known from experiments that the radiated x-ray energy appears to exceed the calculated implosion kinetic energy and Spitzer resistive heating [C. Deeney, Phys. Rev. A 44, 6762 (1991)] but possible mechanisms of the enhanced x-ray production are still being discussed. Enhanced plasma heating in small-diameter wire arrays with decreased calculated kinetic energy was investigated, and a revi...
متن کاملMulti-dimensional high energy density physics modeling and simulation of wire array Z-pinch physics
The twoand three-dimensional ~2D and 3D! versions of ALEGRA-HEDP @A. C. Robinson and C. J. Garasi, ‘‘Three-dimensional Z-pinch wire array modeling,’’ Computer Physics Communications, submitted# have been utilized to simulate discrete wire effects including precursor formation in 2D (r-u plane! and nonuniform axial ablation ~3D!. Comparisons made between 2D and 3D simulations indicate that 2D si...
متن کاملPlanar wire-array Z-pinch implosion dynamics and X-ray scaling at multiple-MA drive currents for a compact multisource hohlraum configuration.
An indirect drive configuration is proposed wherein multiple compact Z-pinch x-ray sources surround a secondary hohlraum. Planar compact wire arrays allow reduced primary hohlraum surface area compared to cylindrical loads. Implosions of planar arrays are studied at up to 15 TW x-ray power on Saturn with radiated yields exceeding the calculated kinetic energy, suggesting other heating paths. X-...
متن کاملPerfectly conducting incompressible fluid model of a wire array implosion
An incompressible perfectly conducting magnetohydrodynamic model is applied to describe a multiwire array implosion on the (r ,u) plane using the theory of analytic functions. The plasma columns emerging from the electrical explosion of individual wires move and change the shape of their cross section in the magnetic field produced by the currents flowing on the surfaces of the columns and clos...
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ژورنال
عنوان ژورنال: Laser and Particle Beams
سال: 2001
ISSN: 0263-0346
DOI: 10.1017/s0263034601193122