Physical aspects of high intensity x-ray emission from x-pinch

S. Yu. Gus'kov; G. V. Ivanenkov; W. Stepnievski

doi:10.1117/12.640012

7 December 2006 Physical aspects of high intensity x-ray emission from X-pinch

S. Yu. Gus'kov, G. V. Ivanenkov, W. Stepnievski

Proceedings Volume 5974, International Conference on Charged and Neutral Particles Channeling Phenomena; 59740T (2006) https://doi.org/10.1117/12.640012
Event: International Conference on Charged and Neutral Particles Channeling Phenomena, 2004, Rome, Italy

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.

Citation Download Citation

S. Yu. Gus'kov, G. V. Ivanenkov, and W. Stepnievski "Physical aspects of high intensity x-ray emission from X-pinch", Proc. SPIE 5974, International Conference on Charged and Neutral Particles Channeling Phenomena, 59740T (7 December 2006); https://doi.org/10.1117/12.640012

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