A Unified Theory of Toroidal Momentum Transport and Momentum Transport Bifurcations by Drift Wave Turbulence

POSTER

Abstract

We present a unified theory of toroidal momentum transport, treating both resonant and non-resonant particle contributions. A general momentum conservation theorem is proved, which relates momentum density evolution to the resonant particle momentum flux, the wave momentum flux and a refractive force due to straining of wave packets. The wave momentum flux is calculated using a Chapmen-Enskog like expansion of the wave kinetic equation. The results are used to explain a new class of momentum transport bifurcation. Possible origins of hysteresis are discussed.

*This work was supported by DoE Grant No. DE-FG02-04ER54738.

Authors

  • P.H. Diamond

    • University of California, San Diego, La Jolla, CA 92093-0424 USA
    • University of California, San Diego

  • C. McDevitt

    • University of California, San Diego, La Jolla, CA 92093-0424 USA
    • U.C.S.D.

  • O.D. Gurcan

    • University of California, San Diego, La Jolla, CA 92093-0424 USA
    • University of California, San Diego

  • T.S. Hahm

    • Princeton Plasma Physics Laboratory, Princeton, NJ 08543-0451 USA
    • Plasma Physics Laboratory, Princeton University

  • V. Naulin

    • Risoe National Laboratory, Roskilde, DK-4000, Denmark