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Stabilization of Viscosity on Rayleigh-Taylor Instability in Z Pinches |
| QIU Xiao-Ming;HUANG Lin;JIAN Guang-De |
| Southwestern Institute of Physics, PO Box 432, Chengdu 610041 |
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| Cite this article: |
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QIU Xiao-Ming, HUANG Lin, JIAN Guang-De 2004 Chin. Phys. Lett. 21 689-692 |
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Abstract On the basis of incompressible viscid magnetohydrodynamic equations, a formula is developed to study the mitigation of viscosity on the Rayleigh-Taylor instability in Z pinches. The results indicate that in the whole wavenumber region, the viscosity effect can mitigate the instability. In addition, we compare the viscosity effect with the finite Larmor radius effect [Chin. Phys. Lett. 19 (2002) 217], and the calculation results show that in the temperature region of interest, the former is stronger than the latter. Moreover, for heavy wire-array implosion the viscosity effect is stronger than the finite Larmor radius one, because the former is proportional to m1/2i and the latter is independent of mi.
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| Keywords:
52.35.Py
52.58.Lq
52.65.Kj
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Published: 01 April 2004
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| PACS: |
52.35.Py
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(Macroinstabilities (hydromagnetic, e.g., kink, fire-hose, mirror, ballooning, tearing, trapped-particle, flute, Rayleigh-Taylor, etc.))
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52.58.Lq
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(Z-pinches, plasma focus, and other pinch devices)
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52.65.Kj
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(Magnetohydrodynamic and fluid equation)
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