National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [11075073, 11105071, 41104094, 11205086]; Construct Program of Fusion and Plasma Physics Innovation Team in Hunan province [NHXTD03]
机构署名:
本校为第一且通讯机构
院系归属:
核科学技术学院
数理学院
摘要:
Nonlinear excitation of geodesic acoustic mode by drift waves is investigated in toroidally rotating tokamak plasmas using the ideal magnetohydrodynamic equations. It is found that both the radial wave number and the nonlinear growth rate of the driven geodesic acoustic mode increase with the speed of the toroidal rotation, where the decisive factor is the frequency shift of the geodesic acoustic mode induced by the toroidal rotation. The additional nonlinear terms induced by the toroidal rotation velocity make little effect, even though the...