By using the ECE diagnostics, new types of sawtooth crashes in helical plasmas in LHD were discovered. One is the full sawtooth crash in the case of countercurrent, and another is the annular crash in the case of cocurrent. The plasma confinement is slightly degraded due to the sawtooth oscillation. An observed rapid mixture of the plasma in the limited region suggests that sawtooth crashes in LHD are reconnection phenomena.
|Journal||Physical review letters|
|Publication status||Published - May 23 2003|
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)