Stabilization of the resistive wall mode instability by trapped energetic particles

Hao, G. Z.; Liu, Y. Q.; Wang, A. K.; Jiang, H. B.; Lu, Gaimin; He, H. D.; Qiu, X. M.
March 2011
Physics of Plasmas;Mar2011, Vol. 18 Issue 3, p032513
Academic Journal
A theoretical model for investigating the effect of the trapped energetic particles (EPs) on the resistive wall mode (RWM) instability is proposed. The results demonstrate that the trapped EPs have a dramatic stabilizing effect on the RWM because of resonant interaction between the mode and the magnetic precession drift motion of the trapped EPs. The results also show that the effect of the trapped EPs depends on the wall position. In addition, the stabilizing effect becomes stronger when the plasma rotation is taken into account. For sufficiently fast plasma rotation, the trapped EPs can lead to the complete stabilization of the RWM. Furthermore, the trapped EPs can induce a finite real frequency of the RWM in the absence of plasma rotation.


Related Articles

  • Simulation of nuclear magnetic resonance spin echoes using the Bloch equation: Influence of magnetic field inhomogeneities. Nyenhuis, J. A.; Yee, O. P. // Journal of Applied Physics;11/15/1994, Vol. 76 Issue 10, p6909 

    Deals with a study which explored the limitations of field inhomogeneity on spin echo techniques for measuring relaxation times. Applications of nuclear magnetic resonance; Simulation model; Simulation results and discussion.

  • Characterization of the magnetorotational instability from a turbulent background state. Zimmerman, Daniel S.; Triana, Santiago A.; Sisan, Daniel R.; Tillotson, W. Andrew; Dorland, William; Lathrop, Daniel P. // AIP Conference Proceedings;2004, Vol. 733 Issue 1, p13 

    Experiments in spherical Couette flow (flow between concentric rotating spheres) with an imposed magnetic field have yielded induced magnetic fields consistent with the magnetorotational instability. This might be expected due to the decreasing rotation rate profile in the base state. The...

  • Magnetohydrodynamically stable plasma with supercritical current density at the axis. Burdakov, A. V.; Postupaev, V. V.; Sudnikov, A. V. // Physics of Plasmas;May2014, Vol. 21 Issue 5, p052507-1 

    In this work, an analysis of magnetic perturbations in the GOL-3 experiment is given. In GOL-3, plasma is collectively heated in a multiple-mirror trap by a high-power electron beam. During the beam injection, the beam-plasma interaction maintains a high-level microturbulence. This provides an...

  • A magnetospheric energy principle extended to include neutral atmosphere. Miura, Akira // Physics of Plasmas;Mar2011, Vol. 18 Issue 3, p032904 

    The problem of ideal magnetohydrodynamic stability of plasmas in a magnetosphere-atmosphere system, in which the unperturbed magnetic field is assumed to be perpendicular to the plasma-atmosphere interface (ionospheric surface), is investigated by means of an extended magnetospheric energy...

  • On toroidal equilibrium of non-neutral plasma. Avinash, K. // Physics of Fluids B: Plasma Physics;Dec91, Vol. 3 Issue 12, p3226 

    The equilibrium of a non-neutral cloud in a toroidal magnetic field is analyzed. In the zero mass limit it is shown that, because of plasma diamagnetism and electrostatic hoop force, there is a net force on the cloud along the major radius. In a large-aspect-ratio conducting vessel, this force...

  • Role of parallel flow curvature on the mitigation of Rayleigh-Taylor instability. Sarmah, D.; Sen, S.; Cairns, R. A. // Physics of Plasmas;Mar2001, Vol. 8 Issue 3, p986 

    The effect of a radially varying parallel equilibrium flow on the stability of the Rayleigh-Taylor (RT) mode is studied analytically in the presence of a sheared magnetic field. It is shown that the parallel flow curvature can completely stabilize the RT mode. The flow curvature also has a...

  • Improved stability condition for rotating plasmas. Hameiri, Eliezer; Holties, Hanno A. // Physics of Plasmas;Dec94, Vol. 1 Issue 12, p3807 

    Reports on the finding that the conservation of flow circulation along magnetic field lines can be used to improve on the stability criterion for rotating plasmas by adding a positive definite term to the energy integral. Effectiveness of improvement for ballooning modes in systems with a...

  • Stability of short wavelength tearing and twisting modes. Waelbroeck, F.L. // Physics of Plasmas;Apr99, Vol. 6 Issue 4, p1208 

    Describes how to obtain the stability parameters of small-wavelength resistive modes in differentially rotating plasmas. Intrinsic stability of modes that reconnect the magnetic field at a single resonant surface; Analysis to Shafranov's shifted-circle equilibrium.

  • Determination of the vacuum field resulting from the pertubation of a toroidally symmetric plasma. Atanasiu, C.V.; Boozer, A.H. // Physics of Plasmas;Jul99, Vol. 6 Issue 7, p2781 

    Focuses on the determination of the vacuum field resulting from the perturbation of a toroidally symmetric plasma. Description and calculation of the stability of modes and the plasma response function; Normal component of the magnetic field perturbation.


Read the Article


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

Try another library?
Sign out of this library

Other Topics