ITER Plasma Physics. ITER Core Plasma Heating by Nonlinearly Coupled Short-wavelength Electron-Bernstein and Ion Bernstein Modes

V. Alexander Stefan

ITER Plasma Physics. ITER Core Plasma Heating by Nonlinearly Coupled Short-wavelength Electron-Bernstein and Ion Bernstein Modes

POSTER

Abstract

Electron cyclotron plasma heating is a promising nonlinear method for the ITER plasma environment (X-mode and O-mode launching). In particular, short-wavelength Electron-Bernstein modes (absolute instability, kρ_e~1; predominantly collisionally dissipated, k-vector normal on B-toroidal field) are efficient in transferring the driver-energy to ions via electron-ion collisions. [1] Nonlinear[2] coupling[3] to short-wavelength Ion-Bernstein modes provides an additional channel for direct deposition of the driver-energy to ion-plasma components. [4]

[1] T.H. Stix, 1965 ; W. L. Kruer and J. M. Dawson

Phys. Rev. Lett. 25, 1174 (1970).

[2] R. K. Dodd et al, Solitons and Nonlinear Wave Equations (Academic Press, New York, 1982; pp. 517—521.

[3] V. Stefan and N A Krall, Physics of Fluids 28, 2937 (1985).

[4] Evgeniy Pavlovich Velikhov, Kurchatov Center, Moscow, Russia; private communication, May, 2019.

Presenters

V. Alexander Stefan

VICTOR FREDERICK WEISSKOPF CENTER for NATIONAL-SECURITY-PHYSICS and GLOBAL COOPERATION--Stefan University, The Marshall Nicholas Rosenbluth Center for Thermonuclear Fusion Studies (Stefan University)

Authors

V. Alexander Stefan

VICTOR FREDERICK WEISSKOPF CENTER for NATIONAL-SECURITY-PHYSICS and GLOBAL COOPERATION--Stefan University, The Marshall Nicholas Rosenbluth Center for Thermonuclear Fusion Studies (Stefan University)