MODE SYNCHRONIZATION PHENOMENA IN UNIVERSAL PLASMA INSTABILITIES.
Abstract
A nonlinear mechanism is indicated by which discrete modes in a bounded unstable plasma can give rise to a quasi-continuous turbulence spectrum. The transition from the discrete spectrum to the turbulence spectrum occurs at a critical value of the so-called locking parameter. A given mode is frequency-modulated by a 'periodic pulling' effect when the mode is at the threshold for locking onto a perturbation whose frequency is close to the unperturbed mode frequency. In the present case the perturbation derives from harmonics of lower frequency modes. The broad spectrum associated with the frequency modulated mode provides an effective means for taking the energy contained in the discrete mode and distributing it over a large number of sidebands arranged asymmetrically around the original mode frequency. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1967
- Accession Number
- AD0651092
Entities
People
- Herbert Lashinsky
Organizations
- University of Maryland