Plasma heating by Alfven-wave phase mixing
Plasma heating by Alfven-wave phase mixing
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DOI：
10.1103/physrevlett.32.454
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发表时间：
1974-03
影响因子：
8.6
通讯作者：
A. Hasegawa;Liu Chen
中科院分区：
文献类型：
--
作者：
A. Hasegawa;Liu Chen
We propose the heating of collisionless plasma by utilizing a spatial phase mixing by shear Alfv\'en wave resonance and discuss the application to toroidal plasma. The phase mixing takes place as a result of the nonuniform Alfv\'en speed. The approximate heating rate per cycle of the wave frequency is given by $\frac{(\frac{b_{0}^{}{}_{}{}^{2}}{{\ensuremath{\mu}}_{0}})\ensuremath{\kappa}}{{k}_{\ensuremath{\perp}}}$ where $\ensuremath{\kappa}$ is the measure of the nonuniformity, ${k}_{\ensuremath{\perp}}$ is the wave number perpendicular to the direction of the magnetic field and the nonuniformity, and ${b}_{0}$ is the flux density of the applied-wave magnetic field.
We propose the heating of collisionless plasma by utilizing a spatial phase mixing by shear Alfv\'en wave resonance and discuss the application to toroidal plasma. The phase mixing takes place as a result of the nonuniform Alfv\'en speed. The approximate heating rate per cycle of the wave frequency is given by $\frac{(\frac{b_{0}^{}{}_{}{}^{2}}{{\ensuremath{\mu}}_{0}})\ensuremath{\kappa}}{{k}_{\ensuremath{\perp}}}$ where $\ensuremath{\kappa}$ is the measure of the nonuniformity, ${k}_{\ensuremath{\perp}}$ is the wave number perpendicular to the direction of the magnetic field and the nonuniformity, and ${b}_{0}$ is the flux density of the applied-wave magnetic field.