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MHD processes during the cascade development of the neck and hot spot in an X-pinch
- Source :
- Plasma Physics Reports. 34:619-638
- Publication Year :
- 2008
- Publisher :
- Pleiades Publishing Ltd, 2008.
-
Abstract
- Results are presented from two-dimensional MHD simulations of X-pinch implosion. The simulations were performed in the (r, z) and (x, y) geometries for homogeneous (dense plasma) and heterogeneous (core-corona) loads. The formation of a minidiode, the development of a neck and an X-radiating hot spot, and the influence of the plasma corona on the implosion dynamics of the dense X-pinch plasma were investigated. For through simulations, the conical neck model was used, whereas a detailed analysis of the X-ray burst was performed in the parabolic neck model. The MHD processes occurring during the implosion of oblique shock waves and the onset of instability of the plasma column were examined. It is found that, due to the quasi-periodic character of these processes, the neck compression proceeds in a cascade fashion. The plasma state in a hot spot just before the break of the neck is analyzed, and the possibility of generating fast particle beams is considered.
- Subjects :
- Physics
Shock wave
Physics and Astronomy (miscellaneous)
Implosion
Hot spot (veterinary medicine)
Mechanics
Plasma
Astrophysics
Condensed Matter Physics
Instability
Physics::Plasma Physics
Physics::Space Physics
Pinch
Astrophysics::Solar and Stellar Astrophysics
Oblique shock
Magnetohydrodynamics
Subjects
Details
- ISSN :
- 15626938 and 1063780X
- Volume :
- 34
- Database :
- OpenAIRE
- Journal :
- Plasma Physics Reports
- Accession number :
- edsair.doi...........5abc5d53cc3b995e320f0d7a1ddca41f