Intermittency of plasma edge fluctuation data: Multifractal analysis
Plasma edge fluctuations show a degree of intermittency similar to fluid turbulence. Using fluctuation measurements obtained with Langmuir probe data from two confinement devices, it is shown that plasma fluctuations have a multifractal character over the fluctuation range of scales with intermittency levels comparable to the levels measured in neutral fluid turbulence. In the mesoscale range, that is, for time scales between 10 times the turbulence decorrelation time and plasma confinement time, plasma fluctuations have a structure closer to a monofractal with very low intermittency. (c) 2000 American Institute of Physics.
- Publication Date:
- OSTI Identifier:
- Resource Type:
- Journal Article
- Resource Relation:
- Journal Name: Physics of Plasmas; Journal Volume: 7; Journal Issue: 8; Other Information: PBD: Aug 2000
- Country of Publication:
- United States
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; FLUCTUATIONS; FRACTALS; LANGMUIR FREQUENCY; ION PROBES; PLASMA CONFINEMENT; BOUNDARY LAYERS; THEORETICAL DATA
Enter terms in the toolbar above to search the full text of this document for pages containing specific keywords.