Reduction of ion thermal diffusivity inside a magnetic island in JT-60U Tokamak plasma

• Ida, K.

• Kamiya, K.

• Isayama, A.

• Sakamoto, Y.

Abstract

A peaked ion temperature profile is observed inside the magnetic island during mode locking after the back transition from H mode to L mode in JT-60U. The thermal diffusivity evaluated inside the magnetic island is 0.1m2/s, which is much smaller than that outside the magnetic island by an order of magnitude. The present experiment gives clear evidence that ion heat transport inside a magnetic island can bifurcate and the transport level can be suppressed to the very low level associated with the strong flow shear at the boundary.

Journal

• Physical Review Letters

  Physical Review Letters Vol.109 (Issue6), 065001-1 -065001-4-, 2012-08-01

  American Physical Society

Keywords

• General Physics and Astronomy

Details

• CRID: 1050564287429495552
• NII Article ID: 120005966660
• DOI: 10.1103/physrevlett.109.065001
• ISSN: 10797114
• ISSN: 00319007
• HANDLE: 10655/10140
• Web Site: https://nifs-repository.repo.nii.ac.jp/records/536
• Web Site: http://link.aps.org/article/10.1103/PhysRevLett.109.065001
• Web Site: http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevLett.109.065001/fulltext
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • Crossref
  • CiNii Articles
  • KAKEN