Chaos and structures in nonlinear plasmas by C. W. Horton, Y. H. I H. Ichikawa

By C. W. Horton, Y. H. I H. Ichikawa

This e-book develops the topic of nonlinear plasma physics from a common physics viewpoint. It starts off with an outline of nonlinear oscillations, the parametric instability, the pendulum, and the nonlinear island overlap criterion. The Kolomogorov-Arnold-Moser (KAM) conception is additionally analyzed. Laboratory visualizations of the KAM concept are offered for experiments in toroidal plasma confinement and rotating fluids. the topics of shipping in ExB flows and geostrophic flows are constructed in parallel, stressing the generality of the Charney-Hasegawa-Mima equation. the twin nature of wave turbulence and vortex dynamics is constructed for plasmas and geophysical flows. The presentation of the topic of nonlinear maps indicates how maps are concerning the nonlinear dynamics in plasma physics difficulties. a variety of area plasma and fusion physics examples are built in the course of the ebook. the ultimate bankruptcy bargains with turbulence concept, renormalized mode coupling equations, and Kolomogorov-type spectra as changed for anisotropic plasmas.

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Finally, let us note that the cybotactic groups are anisotropic, with ξ// ≈ 5ξ⊥ , typically. b) Divergence of the elastic constants K2 and K3 As we have seen, the lamellar structure of smectics is incompatible with twist and bend deformations of the director field n. Such behavior suggests that the Frank constants K2 and K3 of the nematic phase diverge upon approaching the transition. To prove this result, let us neglect the anisotropy of the medium and assume that the correlation lengths are equal (ξ // = ξ⊥ = ξ), as are the Frank constants (K1 = K2 = K3 = K).

C) Landau-Ginzburg-de Gennes free energy As usual, let us expand the free energy as a power series of the order parameter Ψ. It is important to note that Ψ is complex, while the energy is a real quantity. On the other hand, the energy is necessarily invariant with respect to translations, and thus independent of the phase φ of the order parameter. The energy must only depend on the product ΨΨ* = |Ψ|2 yielding, to lowest order: fL = 1 | |2 1 | |4 α Ψ + β Ψ + ... 27) In this expression, β takes into account for the coupling with the quadrupolar 21 SMECTIC AND COLUMNAR LIQUID CRYSTALS order parameter discussed in the previous section.

J. Physique (France), 35 (1974) 301. , “100 Years of Liquid Crystal Chemistry,” Mol. Cryst. Liq. , 165 (1988) 45. , Phys. Rev. , 31 (1973) 349.

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