Re-appraisal and extension of the Gratton-Vargas two-dimensional analytical snowplow model of plasma focus - III: Scaling theory for high pressure operation and its implications
| Autor: | S. K. H. Auluck |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Physics Conservation law Iterative and incremental development Dense plasma focus Neutron emission Work (physics) FOS: Physical sciences Mechanics Plasma Condensed Matter Physics 01 natural sciences Physics - Plasma Physics 010305 fluids & plasmas Plasma Physics (physics.plasm-ph) Physics::Plasma Physics Ionization 0103 physical sciences Specific energy |
| Popis: | Recent work on the revised Gratton-Vargas model has demonstrated that there are some aspects of Dense Plasma Focus (DPF) which are not sensitive to details of plasma dynamics and are well captured in an oversimplified model assumption which contains very little plasma physics. A hyperbolic conservation law formulation of DPF physics reveals the existence of a velocity threshold related to specific energy of dissociation and ionization, above which, the work done during shock propagation is adequate to ensure dissociation and ionization of the gas being ingested. These developments are utilized to formulate an algorithmic definition of DPF optimization that is valid in a wide range of applications, not limited to neutron emission. A universal scaling theory of DPF design optimization is proposed and illustrated for designing devices working at one or two orders higher pressure of deuterium than the current practice of designs optimized at pressures less than 10 mbar of deuterium. These examples show that the upper limit for operating pressure is of technological (and not physical) origin. Accepted for publication in Physics of Plasmss |
| Databáze: | OpenAIRE |
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