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Proceedings Paper

Physical aspects of high intensity x-ray emission from X-pinch
Author(s): S. Yu. Gus'kov; G. V. Ivanenkov; W. Stepnievski
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Paper Abstract

The experimental and numerical data on electrical explosion of X-pinch are analyzed to develop the understanding of physical phenomena, which leads to generation of short, high intensive X-ray pulse. Main attention is given to MHD cumulative processes that are reasonable for creation of point-like regions of a non-equilibrium compressed plasma with high temperatures. The investigation based on the model of formation and development of hot plasma in the region of X- pinch neck. The model bases on the analysis of cumulative MHD compression of X-pinch neck and takes into account a radial compression of plasma by the magnetic field, outlet of plasma on axis, two-temperature processes of electron-ion relaxation, Joule heating, electron and ion viscous friction and dissipation. The radiation transfer is described by the dif- fusion approach in the axial direction and as the vacuum losses of radiation on radius. The lifetime of hot plasma is de- termined by a break of the neck in the result of generation of axial shock waves. The model of the scaling laws for hot spot plasma parameters and X-ray burst is described. One obtained that the duration of X-ray pulse is about several pico- seconds, the scale of spark region size is no large than one micron, and the X-ray pulse intensity is about 1017 W/cm2.

Paper Details

Date Published: 7 December 2006
PDF: 12 pages
Proc. SPIE 5974, International Conference on Charged and Neutral Particles Channeling Phenomena, 59740T (7 December 2006); doi: 10.1117/12.640012
Show Author Affiliations
S. Yu. Gus'kov, P.N. Lebedev Physical Institute of Russian Academy of Sciences (Russia)
G. V. Ivanenkov, P.N. Lebedev Physical Institute of Russian Academy of Sciences (Russia)
W. Stepnievski, P.N. Lebedev Physical Institute of Russian Academy of Sciences (Russia)


Published in SPIE Proceedings Vol. 5974:
International Conference on Charged and Neutral Particles Channeling Phenomena
Sultan B. Dabagov, Editor(s)

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