Ideal magnetohydrodynamic instabilities with low toroidal mode numbers localized near an internal transport barrier in high-βp mode plasmas in the Japan Atomic Energy Research Institute Tokamak-60 Upgrade
Ideal magnetohydrodynamic instabilities with low toroidal mode numbers localized near an internal transport barrier in high-βp mode plasmas in the Japan Atomic Energy Research Institute Tokamak-60 Upgrade
复制标题
日本原子能研究所 Tokamak-60 升级中高 βp 模式等离子体内部传输势垒附近具有低环形模式数的理想磁流体动力学不稳定性
DOI：
10.1063/1.872591
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发表时间：
1997
影响因子：
2.2
通讯作者：
S. Tokuda
中科院分区：
文献类型：
--
作者：
S. Takeji;Y. Kamada;T. Ozeki;S. Ishida;T. Takizuka;Y. Neyatani;S. Tokuda
日本原子能研究所托卡马克-60升级（JT-60U）高βp模等离子体中低环面模数(n)的径向局域磁流体动力学（MHD）不稳定性[j]。Koide等人，物理学。等离子体，1623(1997)]。βp的不稳定性发生在βp崩塌时较低的区域，其增长率为理想MHD不稳定性的数量级。通过对理想MHD稳定性的线性分析，发现了当陡压力梯度驱动的自举电流使局部磁切变减小（s > 0），且安全系数正接近于整数值时，内部输运势垒附近的低n模不稳定。
Local steep pressure gradient generated near an internal transport barrier drives a radially localized magnetohydrodynamic (MHD) instability with low toroidal mode number (n) in the high-βp mode plasma in the Japan Atomic Energy Research Institute Tokamak-60 Upgrade (JT-60U) [Y. Koide et al., Phys. Plasmas 4, 1623 (1997)]. The instability occurs in the βp regime lower than that for the βp-collapse and its growth rate is of the order of the ideal MHD instability. By a linear analysis of ideal MHD stability, low n modes localized near the internal transport barrier are found to be destabilized in the situation that the bootstrap current driven by the steep pressure gradient reduces the local magnetic shear (s≲0) where the safety factor is right close to an integer value.
影响因子：
3.3
作者：
A. Gibson;T. Sekiguchi;K. Lackner;S. Bodner;R. Hancox
通讯作者：
A. Gibson;T. Sekiguchi;K. Lackner;S. Bodner;R. Hancox