Nonlinear decay and plasma heating by a toroidal Alfvén eigenmode
We demonstrate theoretically that a toroidal Alfvén eigenmode (TAE) can parametrically
decay into a geodesic acoustic mode and kinetic TAE in a toroidal plasma. The
corresponding threshold condition for the TAE amplitude is estimated to be| δ B⊥/B 0|∼ O
(10-4). Here, δ B⊥ and B 0 are, respectively, the perturbed magnetic field of the pump TAE
and the equilibrium magnetic field. This novel decay process, in addition to contributing to
the nonlinear saturation of energetic-particle or α-particle driven TAE instability, could also …
decay into a geodesic acoustic mode and kinetic TAE in a toroidal plasma. The
corresponding threshold condition for the TAE amplitude is estimated to be| δ B⊥/B 0|∼ O
(10-4). Here, δ B⊥ and B 0 are, respectively, the perturbed magnetic field of the pump TAE
and the equilibrium magnetic field. This novel decay process, in addition to contributing to
the nonlinear saturation of energetic-particle or α-particle driven TAE instability, could also …
We demonstrate theoretically that a toroidal Alfvén eigenmode (TAE) can parametrically decay into a geodesic acoustic mode and kinetic TAE in a toroidal plasma. The corresponding threshold condition for the TAE amplitude is estimated to be . Here, and are, respectively, the perturbed magnetic field of the pump TAE and the equilibrium magnetic field. This novel decay process, in addition to contributing to the nonlinear saturation of energetic-particle or -particle driven TAE instability, could also contribute to the heating as well as regulating the transports of thermal plasmas.
American Physical Society以上显示的是最相近的搜索结果。 查看全部搜索结果