Magnetic drift kinetic damping of the resistive wall mode in large aspect ratio tokamaks

Yueqiang Liu; Chu, M. S.; Gimblett, C. G.; Hastie, R. J.
September 2008
Physics of Plasmas;Sep2008, Vol. 15 Issue 9, p092505
Academic Journal
An analytical, large aspect ratio, calculation of the drift-kinetic energy perturbation is carried out for the resistive wall mode, due to the mode resonance with the magnetic precession drifts of trapped thermal ions and electrons. Four asymptotic cases are identified and analyzed in detail. Generally, a partial stabilization of the mode is possible thanks to the kinetic correction to the perturbed plasma energy. A complete stabilization can occur only in a narrow space of the plasma equilibrium parameters. Kinetic destabilization of the mode is also possible due to a finite pressure correction to the precession drift frequency.


Related Articles

  • 2D electron density profile measurement in tokamak by laser-accelerated ion-beam probe. Chen, Y. H.; Yang, X. Y.; Lin, C.; Wang, L.; Xu, M.; Wang, X. G.; Xiao, C. J. // Review of Scientific Instruments;2014, Vol. 85 Issue 11, p1 

    A new concept of Heavy Ion Beam Probe (HIBP) diagnostic has been proposed, of which the key is to replace the electrostatic accelerator of traditional HIBP by a laser-driven ion accelerator. Due to the large energy spread of ions, the laser-accelerated HIBP can measure the two-dimensional (2D)...

  • Decay of a low-pressure oxygen magnetized and unmagnetized plasma. Levko, Dmitry // Journal of Applied Physics;2014, Vol. 116 Issue 10, p1 

    Extraction of negative ions from electronegative plasmas is one of the key issues addressed during the study of these plasmas. One of the widely used methods is the turn off of the electron heating power. This results in the escape of electrons from the plasma and results in the formation of...

  • Radial profile measurements of plasma pressure-like fluctuations with the heavy ion beam diagnostic on the tokamak ISTTOK. Henriques, R. B.; Malaquias, A.; Nedzelskiy, I. S.; Silva, C.; Coelho, R.; Figueiredo, H.; Fernandes, H. // Review of Scientific Instruments;2014, Vol. 85 Issue 11, p1 

    The Heavy Ion Beam Diagnostic (HIBD) on the tokamak ISTTOK (Instituto Superior Técnico TOKamak) has been modified, in terms of signal conditioning, to measure the local fluctuations of the neσ1,2 (Te) product (plasma density times the effective ionization cross-section) along the tokamak...

  • Studies of a Parallel Force Balance Breaking Instability in a Stellarator. Marksteiner, Q. R.; Pedersen, T. Sunn; Berkery, J. W.; Hahn, M. S.; Mendez, J. M.; de Gevigney, B. Durand; Ennever, P.; Boyle, D.; Shulman, M.; Himura, H. // AIP Conference Proceedings;3/30/2009, Vol. 1114 Issue 1, p63 

    An instability has been observed in non-neutral plasmas confined on magnetic surfaces in the presence of a finite ion fraction [Phys. Rev. Letters 100, 065002 (2008)]. The dependence of the frequency and amplitude of the instability on neutral pressure, magnetic field strength, and ion species...

  • Electrical detection of liquid lithium leaks from pipe joints. Schwartz, J. A.; Jaworski, M. A.; Mehl, J.; Kaita, R.; Mozulay, R. // Review of Scientific Instruments;2014, Vol. 85 Issue 11, p1 

    A test stand for flowing liquid lithium is under construction at Princeton Plasma Physics Laboratory. As liquid lithium reacts with atmospheric gases and water, an electrical interlock system for detecting leaks and safely shutting down the apparatus has been constructed. A defense in depth...

  • Recent Data Research Activities on Basic Plasma Research in Korea. Yoon, Jung-Sik; Song, Mi-Young; Kwon, Deuk-Chul; Chang, Won-Seok // AIP Conference Proceedings;5/11/2011, Vol. 1344 Issue 1, p197 

    Since the characteristics of plasmas depend strongly on the interactions between plasma particles such as electron, ion, and neutrals, a well-established atomic and molecular database is needed to understand and produce various types of plasma. Thus, here the work conducted at the Data Center...

  • Suppression of the Neoclassical Tearing Modes in Tokamaks under Anomalous Transverse Transport Conditions when the Magnetic Well Effect Predominates over the Bootstrap Drive. Konovalov, S. V.; Mikhailovskii, A. B.; Shirokov, M. S.; Ozeki, T.; Tsypin, V. S. // Plasma Physics Reports;Aug2005, Vol. 31 Issue 8, p621 

    A study is made of the suppression of neoclassical tearing modes in tokamaks under anomalous transverse transport conditions when the magnetic well effect predominates over the bootstrap drive. It is stressed that the corresponding effect, which is called the compound suppression effect, depends...

  • Recent results from high performance and steady-state researchers in the Japan Atomic Energy... Kimura, H. // Physics of Plasmas;May96, Vol. 3 Issue 5, p1943 

    Presents findings of high-performance and steady-state plasma research on the Japan Atomic Energy Research Institute Tokamak-60 Upgrade. Sawtooth stabilization by ion cyclotron range of frequencies heating; Edge pressure gradient at the onset of edge localized modes; Internal transport barrier...

  • Effect of flow damping on drift-tearing magnetic islands in tokamak plasmas. Fitzpatrick, R.; Waelbroeck, F. L. // Physics of Plasmas;Jul2009, Vol. 16 Issue 7, p072507 

    A systematic fluid theory of nonlinear drift-tearing magnetic island dynamics in a conventional large aspect-ratio low-β circular cross-section tokamak plasma is derived from a set of single-helicity reduced neoclassical-magnetohydrodynamical equations which incorporate electron and ion...


Read the Article


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

Try another library?
Sign out of this library

Other Topics