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Influence of an external additional magnetic field on the formation of a plasma column in a dense plasma focus
- Source :
- Physics of Plasmas. 26:102701
- Publication Year :
- 2019
- Publisher :
- AIP Publishing, 2019.
-
Abstract
- This paper concerns the evolution of internal structures and the neutron production in plasma-focus discharges performed in the presence of a permanent magnet (placed inside the anode front) and within a residual magnetic field (after the removal of this magnet). The initial magnetic field generated by this magnet prevented: (i) the effective compression of a dense pinch column, (ii) the formation of plasma organized structures, and (iii) the evolution of plasma instabilities. The experimental results have shown an increase in the initial magnetic field due to a magnetic dynamo effect in the presence of the permanent magnet, as well as in a series of shots performed after its removal. It was observed that the appearance of plasmoidal structures is necessary for the emission of fusion neutrons. A characteristic quasicylindrical plasma layer of the radius corresponding to the plasma lobule tops, which might be identified with a ring region of the acceleration of fast deuterons, was also observed.
Details
- ISSN :
- 10897674 and 1070664X
- Volume :
- 26
- Database :
- OpenAIRE
- Journal :
- Physics of Plasmas
- Accession number :
- edsair.doi...........7efa94c467fadee1c41da4617ea78df4
- Full Text :
- https://doi.org/10.1063/1.5094568