Abstract
Fluctuations in ambient shear flow exhibit interesting transient phenomena. Shear flow produces not only Kelvin-Helmholtz modes (global exponential instabilities represented by point spectra) but also local algebraic instabilities associated with multiple continuous spectra. Since the generating operator is non-Hermitian, the orthogonality of eigenmodes is broken, and unresolvable mode couplings (resonances) bring about secular behavior (algebraic instability). We analyze electrostatic fluctuations in a magnetized non-neutral (single species) plasma where the electrostatic potential parallels the stream function. This secular behavior is reproduced by solving the initial value problem with a renormalization method.
Original language | English |
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Pages (from-to) | 397-412 |
Number of pages | 16 |
Journal | Journal of Plasma Physics |
Volume | 69 |
Issue number | 5 |
DOIs | |
Publication status | Published - 2003 Oct 1 |
Externally published | Yes |
ASJC Scopus subject areas
- Condensed Matter Physics