Experimental determination of attractor dimension of ExB turbulence
The time series analysis method for chaotic attractor dimension by Grassberger and Procaccia [P. Grassberger and I. Procaccia, Physica D 9, 189 (1983)] was applied to fluctuations due to an ExB rotational flute mode in the Columbia Linear Machine (CLM) [G. A. Navratil, J. Slough, and A. K. Sen, Plasma Phys. 24, 184 (1982)]. After frequency domain filtering, the results show that the fluctuations carry a dimension close to three. A dimension of three supports a possible three-wave mode coupling process revealed in bi-coherence studies. The Grassberger Procaccia method was also performed on cases where partial feedback suppression was applied to the instability. It is shown that feedback does not alter the attractor dimension of the instability, supporting previous findings that the linear feedback only affects the linear drive of the instability, and not its non-linear saturation mechanism.
- Sponsoring Organization:
- (US)
- OSTI ID:
- 40205943
- Journal Information:
- Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 11 Vol. 7; ISSN 1070-664X
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
Similar Records
Experimental evidence of a low-dimensional attractor in the coupling of drift- and ion-sound waves
Turbulence without strange attractor
Estimating the dimension of weather and climate attractors: Important issues about the procedure and interpretation
Journal Article
·
Thu Jun 01 00:00:00 EDT 1989
· Phys Fluids B; (United States)
·
OSTI ID:6266213
Turbulence without strange attractor
Journal Article
·
Thu Jun 01 00:00:00 EDT 1989
· Journal of Statistical Physics; (USA)
·
OSTI ID:5589890
Estimating the dimension of weather and climate attractors: Important issues about the procedure and interpretation
Journal Article
·
Sun Aug 01 00:00:00 EDT 1993
· Journal of the Atmospheric Sciences; (United States)
·
OSTI ID:5371073