Transition between internal transport barriers with different temperature-profile curvatures in JT-60U Tokamak plasmas |
| |
| Authors: | Ida K Sakamoto Y Takenaga H Oyama N Itoh K Yoshinuma M Inagaki S Kobuchi T Isayama A Suzuki T Fujita T Matsunaga G Koide Y Yoshida M Ide S Kamada Y;JT- team |
| |
| Institution: | National Institute for Fusion Sciences, Toki, Gifu, Japan. |
| |
| Abstract: | A spontaneous transition phenomena between two states of a plasma with an internal transport barrier (ITB) is observed in the steady-state phase of the magnetic shear in the negative magnetic shear plasma in the JT-60U tokamak. These two ITB states are characterized by different profiles of the second radial derivative of the ion temperature inside the ITB region (one has a weak concave shape and the other has a strong convex shape) and by different degrees of sharpness of the interfaces between the L mode and the ITB region, which is determined by the turbulence penetration into the ITB region. |
| |
| Keywords: | |
| 本文献已被 PubMed 等数据库收录！ |
