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Updated: Aug 17, 2026

Non-equilibrium Microwave Plasma for Efficient High Temperature Chemistry
Published on: August 1, 2017
Measurement of turbulence decorrelation during transport barrier evolution in a high-temperature fusion plasma
R Nazikian1, K Shinohara, G J Kramer
1Princeton Plasma Physics Laboratory, P.O. Box 451, Princeton, New Jersey 08543, USA. rnazikian@pppl.gov
Abstract:
A low power polychromatic beam of microwaves is used to diagnose the behavior of turbulent fluctuations in the core of the JT-60U tokamak during the evolution of the internal transport barrier. A continuous reduction in the size of turbulent structures is observed concomitant with the reduction of the density scale length during the evolution of the internal transport barrier. The density correlation length decreases to the order of the ion gyroradius, in contrast with the much longer scale lengths observed earlier in the discharge, while the density fluctuation level remain similar to the level before transport barrier formation.
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