TITLE

Fully nonlinear features of the energetic beam-driven instability

AUTHOR(S)
Lesur, M.; Idomura, Y.; Garbet, X.
PUB. DATE
September 2009
SOURCE
Physics of Plasmas;Sep2009, Vol. 16 Issue 9, p092305
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The so-called Berk–Breizman model is applied to a cold bulk, weak warm beam, one-dimensional plasma, to investigate the kinetic instability arising from the resonance of a single electrostatic wave with an energetic particle beam. A Vlasov code is developed to solve the initial value problem for the full-f distribution, and the nonlinear evolution is categorized in the whole parameter space as damped, steady-state, periodic, chaotic, or chirping. The saturation level of steady-state solutions and the bifurcation between steady-state and periodic solutions near marginal stability match analytic predictions. The limit of a perturbative numerical approach when the resonant region extends into the bulk is shown. Frequency sweeping is observed, with time-evolution approaching theoretical results. A new method to extract the dissipation rate from frequency diagnostics is proposed. For small collision rates, instabilities are observed in the linearly barely stable region.
ACCESSION #
44387808

 

Related Articles

  • Magnetic dissipation in a force-free plasma with a sheet-pinch configuration. Li, H.; Nishimura, K.; Barnes, D. C.; Gary, S. P.; Colgate, S. A. // Physics of Plasmas;Jul2003, Vol. 10 Issue 7, p2763 

    This paper describes the study of a force-free plasma with an initial sheet-pinch configuration ▽×B=-αB, where a is a scalar constant, using both linear theory and 2-1/2 dimensional particle-in-cell simulations with doubly periodic boundary conditions. Previous studies have shown...

  • Relativistic performance analysis of a high current density magnetron injection gun. Barnett, L. R.; Luhmann, Jr., N. C.; Chiu, C. C.; Chu, K. R. // Physics of Plasmas;Sep2009, Vol. 16 Issue 9, p093111 

    Electron beam quality is essential to the performance of millimeter-wave gyroamplifiers, particularly the gyrotron traveling-wave tube amplifier, which is extremely sensitive to the electron velocity spread and emission uniformity. As one moves up in power and frequency, the quality of the...

  • Experimental investigation of the Boltzmann relation for a bi-Maxwellian distribution in inductively coupled plasmas. Jin Young Bang; Chin Wook Chung // Physics of Plasmas;Sep2009, Vol. 16 Issue 9, p093502 

    In plasma, the Boltzmann relation is often used to connect the electron density to the plasma potential because it is not easy to calculate electric potentials on the basis of the Poisson equation due to the quasineutrality. From the Boltzmann relation, the electric potential can be simply...

  • Azimuthally correlated ablation between z-pinch wire cores. Zier, J. C.; Douglass, J. D.; Blesener, I. C.; Blesener, K. S.; Chalenski, D. A.; Gilgenbach, R. M.; Greenly, J. B.; Hammer, D. A.; Knapp, P. F.; Kusse, B. R.; Lau, Y. Y.; McBride, R. D.; Syed, W.; Yu, E. P. // Physics of Plasmas;Oct2009, Vol. 16 Issue 10, p102702 

    Azimuthally correlated wire core ablation was compared for closely spaced versus widely spaced wires in a 1 MA Z-pinch. X-ray point-projection diagnostics revealed that 240 μm spaced wires exhibited a correlation coefficient approaching unity in both real space and in k-space. This correlated...

  • Runaway electrons in a fully and partially ionized nonideal plasma. Ramazanov, T. S.; Turekhanova, K. M. // Physics of Plasmas;Oct2005, Vol. 12 Issue 10, p102502 

    This paper reports on a study of electron runaway for a nonideal plasma in an external electric field. Based on pseudopotential models of nonideal fully and partially ionized plasmas, the friction force was derived as a function of electron velocities. Dependences of the electron free path on...

  • Interaction of two elongated dust grains in flowing plasmas studied by numerical simulations. Miloch, W. J.; Vladimirov, S. V.; Pécseli, H. L.; Trulsen, J. // Physics of Plasmas;Feb2009, Vol. 16 Issue 2, pN.PAG 

    Interaction potentials between two insulating elongated dust grains in a supersonic plasma flow are studied by a particle-in-cell numerical method. It is found that the spatial variations of the charge distribution and the plasma potential depend on the orientation and the relative distance of...

  • Kinetic study of the secondary plasma created in the ITER neutraliser. Dure, F.; Lifschitz, A.; Bretagne, J.; Maynard, G.; Katsonis, K.; Simonin, A.; Minea, T. // AIP Conference Proceedings;3/12/2009, Vol. 1097 Issue 1, p374 

    The properties of the secondary plasma created inside the ITER Neutral Beam Injector (NBI) neutraliser, through the interaction of the high energetic hydrogen beam with the molecular hydrogen gas, have been analysed. Starting from the results of our OBI-2 PIC Monte-Carlo numerical code, detailed...

  • New construction of the magnetohydrodynamic spectrum of stationary plasma flows. II. Rayleigh–Taylor and Kelvin–Helmholtz instability. Goedbloed, J. P. // Physics of Plasmas;Dec2009, Vol. 16 Issue 12, p122111 

    In a preceding paper [J. P. Goedbloed, Phys. Plasmas 16, 122110 (2009)] a new method was developed to compute the magnetohydrodynamic spectrum of waves and instabilities of stationary plasma flows by means of the construction of the solution paths, Ps and Pu, of stable waves and instabilities in...

  • Linear gyrokinetic calculations of toroidal momentum transport in the presence of trapped electron modes in tokamak plasmas. Kluy, N.; Angioni, C.; Camenen, Y.; Peeters, A. G. // Physics of Plasmas;Dec2009, Vol. 16 Issue 12, p122302 

    The toroidal momentum transport in the presence of trapped electron mode microinstabilities in tokamak plasmas is studied by means of quasilinear gyrokinetic calculations. In particular, the role of the Coriolis drift in producing an inward convection of toroidal momentum is investigated. The...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

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

Try another library?
Sign out of this library

Other Topics