| Literature DB >> 18764400 |
K Ida1, Y Sakamoto, H Takenaga, N Oyama, K Itoh, M Yoshinuma, S Inagaki, T Kobuchi, A Isayama, T Suzuki, T Fujita, G Matsunaga, Y Koide, M Yoshida, S Ide, Y Kamada.
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.Year: 2008 PMID： 18764400 DOI： 10.1103/PhysRevLett.101.055003
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161