Evidence for a reduction of heat transport inside the magnetic island O point is observed from the propagation of a cold pulse produced by a tracer encapsulated solid pellet in the Large Helical Device. A small peak and slow propagation of the cold pulse are observed inside the island. A significant result is that electron heat diffusivity inside the island is estimated to be [Formula presented] which is smaller than that outside the island by an order of magnitude.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)