Low Frequency Instabilities Driven by an Ion Temperature Anisotropy.
Abstract
We present a detailed linear analysis of low frequency instabilities driven by an ion temperature anisotropy. In particular we investigate the electromagnetic ion cyclotron instability, the mirror instability, and the firehose instability. These instabilities require a high Beta plasma which is typical of an early time HANE plasma. The electromagnetic ion cyclotron and mirror instabilities also require ion temperature anisotrophy while the firehose instability requires ion temperature anisotrophy. In general, we expect the early time coupling shell to have ion temperature anisotrophy so that the firehose instability is not obviously relevant to HANE situations but is included for the sake of completness. We have also included an analysis of the influence of an electron temperature for the sake of completeness. We have also included an analysis of the influence of an electron temperature anisotropy on the Magnetohydrodynamics instability. This is an extension and correction of the work of Basu and Coppi (1984). We discuss the application of this research to HANE phenomena. Keywords include: Early time HANE phenomenology, Electromagnetic ion cyclotron instability, Anisotropic ion instabilities.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 08, 1985
- Accession Number
- ADA154902
Entities
People
- Joseph D. Huba
- Y. C. Lee
Organizations
- United States Naval Research Laboratory