Turbulent stabilization of neoclassical tearing modes

被引：1
|
作者：
Smolyakov, Andrei
Diamond, Patrick
Yagi, Masatoshi
Itoh, Kimitaka
Itoh, Sanae
机构：
[1] Univ Saskatchewan, Saskatoon, SK S7N 5E2, Canada
[2] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA
[3] Kyushu Univ, Res Inst Appl Mech, Fukuoka 8168580, Japan
[4] Natl Inst Fus Sci, Gifu 5095292, Japan
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2007年 / 76卷 / 11期
关键词：
neoclassical tearing modes; tokamak; turbulence; current diffusion;
D O I：
10.1143/JPSJ.76.113501
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Effect of turbulence on neoclassical tearing modes (NTM) is studied assuming the scale separation between the small scale turbulence and large scale magnetic island. The modified Ohms law taking into account the bootstrap current and the current diffusion due to the small scale turbulence is used. It is shown that the turbulent spreading of the current reduces the pressure gradient drive for NTM and provides an amplitude threshold for NTM excitation.
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页数：3
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