Artigo Acesso aberto Revisado por pares

Persistence of the Firehouse Instability in Highly Relativistic Plasmas

1968; IOP Publishing; Volume: 151; Linguagem: Inglês

10.1086/149491

ISSN

1538-4357

Autores

Peter D. Noerdlinger, Alexander Ko-Min Yui,

Tópico(s)

Magnetic confinement fusion research

Resumo

view Abstract Citations (6) References (6) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Persistence of the Firehouse Instability in Highly Relativistic Plasmas Noerdlinger, Peter D. ; Yui, Alexander Ko-Min Abstract According to the firehose (or "gardenhose") instability criterion for non-relativistic plasmas with anisotropic pressure, the plasma is unstable if and only if PD - P~ > B02/47r, where B0 is the uniform magnetic field before perturbation. Lerche has stated that for a special example of a highly relativistic plasma this criterion must be replaced by an extremely different one, namely, instability for P~> P11 only. It is here shown that, upon correction of a mathematical error, the criterion for instability in Lerche's plasma becomes -0.112 <Bo2/2ir(Plt - .Pi) < 1, which is much more like the non-relativistic criterion. It is also shown that, in spite of convergence difficulties during intermediate steps, power series in the wavenumber k happen to give the correct answer for small k, in contradiction to Lerche's assertion. It is suggested that the behavior of the firehose instability is not highly sensitive to the exact distribution of particle velocities. Publication: The Astrophysical Journal Pub Date: March 1968 DOI: 10.1086/149491 Bibcode: 1968ApJ...151..901N full text sources ADS |

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