Magnetostatic and magnetohydrodynamic modeling of planar wire arrays

Esaulov, A. A.; Kantsyrev, V. L.; Safronova, A. S.; Velikovich, A. L.; Cuneo, M. E.; Jones, B.; Struve, K. W.; Mehlhorn, T. A.
May 2008
Physics of Plasmas;May2008, Vol. 15 Issue 5, p052703
Academic Journal
For the past 2 years the planar wire array loads have proven their ability to create powerful x-ray radiation sources at the pulsed power facilities with the current level ranging from 1 to 3 MA. Several key features of the implosion and ablation dynamics of the planar wire arrays distinguish them from the wire arrays of the conventional cylindrical design. The uneven current partition through the array wires in planar geometry results in a significant difference between the ablation rates of the outermost and the innermost array wires. This difference is even higher in a double row planar array geometry. According to the three-dimensional magnetohydrodynamic simulations the effect of the delayed ablation of the inner array wires can result in effective mitigation of the Rayleigh–Taylor instability modes. The high number (200–300) of wires in a cylindrical array is preferable to ensure fine azimuthal symmetry of an array implosion. However this requirement is not a great concern for the planar wire array loads, which implode along the plane of wires. Hence, the low-wire-number planar array loads are naturally optimized for the Z-pinch experiments at short pulse (100 ns) 1 MA facilities. The application of planar wire array loads at high current accelerators is attractive for the purposes of the inertial confinement fusion because of the relative compactness of these loads and their potential for radiation pulse shaping.


Related Articles

  • Laser ablation of gold: Experiment and atomistic simulation. Starikov, S.; Stegailov, V.; Norman, G.; Fortov, V.; Ishino, M.; Tanaka, M.; Hasegawa, N.; Nishikino, M.; Ohba, T.; Kaihori, T.; Ochi, E.; Imazono, T.; Kavachi, T.; Tamotsu, S.; Pikuz, T.; Skobelev, I.; Faenov, A. // JETP Letters;Aug2011, Vol. 93 Issue 11, p642 

    The interaction of radiation of a picosecond X-ray laser (wavelength λ = 13.9 nm) with targets made of a thick gold film has been studied theoretically and experimentally. It has been shown experimentally that the action of individual X-ray laser pulses with a fluence of F ≈ 21 mJ/cm...

  • Magneto-Hydrodynamic Modeling in the Design and Interpretation of Wire Array Z-pinches. Chittenden, J. P.; Niasse, N. P.; Jennings, C. A. // AIP Conference Proceedings;1/21/2009, Vol. 1088 Issue 1, p3 

    Magneto-hydrodynamic simulations provide a powerful tool for improving our understanding of the complex physical processes underlying the behavior of wire array Z-pinches. We show how, by using large scale parallel 3D simulations of the array as a whole, it is possible to encompass all of the...

  • Research on Two-Dimensional MHD Simulations of X-pinch Implosion and its Physical aspects. Tianxiang Xia; Tong Zhao; Liang Zou; Li Zhang; Feng Zhu // Applied Mechanics & Materials;2014, Issue 525, p316 

    Based on a large quantity of experimental work and study of the two-dimensional MHD (Magnetohydrodynamic) simulation describing the implosion dynamics of X-pinch, at the same time taking basic physical processes of implosion into account, this paper seeks to build a two-dimensional MHD...

  • Numerical studies of ablated-plasma dynamics and precursor current of wire-array Z-pinches. Huang, Jun; Sun, Shun-Kai; Ding, Ning; Ning, Cheng; Xiao, De-Long; Zhang, Yang; Xue, Chuang // Physics of Plasmas;Apr2011, Vol. 18 Issue 4, p042704 

    The dynamics of ablated plasmas of wire-array Z-pinches are studied numerically in (r,θ) geometry by using the magnetohydrodynamic (MHD) simulation model in which the mass injection boundary conditions are presented, and two-dimensional spatio-temporal distributions of magnetic field and...

  • Laser ablation of a molten Ga target; comparison of experiments and simulation. Kiso, M.; Mizuno, K.; Suzuki, J.; Kobayashi, T. // Applied Physics A: Materials Science & Processing;2002, Vol. 74 Issue 2, p139 

    Deals with a study which examined the laser ablation mechanism of a molten gallium target through comparison of experiments and simulation. Details of experimental procedures; Results; Conclusion.

  • Laser ablation of bicomponent systems: A probe of molecular ejection mechanisms. Yingling, Yaroslava G.; Zhigilei, Leonid V.; Garrison, Barbara J.; Koubenakis, Antonis; Labrakis, John; Georgiou, Savas // Applied Physics Letters;3/12/2001, Vol. 78 Issue 11, p1631 

    A combined experimental and molecular dynamics simulation study of laser ablation of a model bicomponent system with solutes of different volatility provides a consistent picture of the mechanisms of material ejection. The comparison of the ejection yields shows that there are two distinct...

  • Experimental and Numerical Investigation of Propellant of Different Thickness for Laser Micro Propulsion. Cai Jian; Li Long; Du Yu; ZhiPing Tang; XiaoJun Hu // AIP Conference Proceedings;5/6/2010, Vol. 1230 Issue 1, p186 

    The thickness of propellant is an important experimental parameter under T-mode, which has a direct impact on the performance of the laser Micro propulsion. In this paper, the prolusion performance of four propellants with different thickness is measured respectively, the experimental results...

  • Linear and nonlinear thresholds of neoclassical tearing modes in tokamaks. Lütjens, Hinrich; Luciani, Jean-François // Physics of Plasmas;Dec2002, Vol. 9 Issue 12, p4837 

    The understanding of the physics of neoclassical tearing modes (NTM) is important for the dimensioning of current drive systems used to stabilize these modes in International Thermonuclear Experimental Reactor (ITER) plasmas [R. Aymar et al., Nucl. Fusion 41, 1301 (2001)]. Predictions by...

  • Simulations of transient collisional x-ray lasers. Sasaki, Akira; Utsumi, Takayuki; Moribayashi, Kengo; Kado, Masataka; Kawachi, Tetsuya // AIP Conference Proceedings;2000, Vol. 547 Issue 1, p133 

    We have developed an atomic kinetics model of transient collisionally excited x-ray lasers by integrating a detailed model for the Ni-like ion based on the atomic data calculated by the HULLAC code, and an averaged model using super levels for a wide range of charge states. Calculations of the...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics