TY - JOUR
T1 - Investigation of Compressible Electromagnetic Flute Mode Instability in Finite Beta Plasma in Support of Z-Pinch and Laboratory Astrophysics Experiments
AU - V. I. Sotnikov, V. V. Ivanov, R. Presura, J. N. Leboeuf, O. G. Onishchenko, B. V. Oliver, B. Jones, T. A. Mehlhorn & C. Deeney
JO - Communications in Computational Physics
VL - 3
SP - 611
EP - 623
PY - 2008
DA - 2008/09
SN - 4
DO - http://doi.org/
UR - https://global-sci.org/intro/article_detail/cicp/7807.html
KW - 
AB - <p style="text-align: justify;">Flute mode turbulence plays an important role in numerous applications,
such as tokamak, Z-pinch, space and astrophysical plasmas. In a low beta plasma
flute oscillations are electrostatic and in the nonlinear stage they produce large scale
density structures co-mingling with short scale oscillations. Large scale structures are
responsible for the enhanced transport across the magnetic field and appearance of
short scales leads to ion heating, associated with the ion viscosity. In the present paper
nonlinear equations which describe the nonlinear evolution of the flute modes treated
as compressible electromagnetic oscillations in a finite beta inhomogeneous plasma
with nonuniform magnetic field are derived and solved numerically. For this purpose
the 2D numerical code FLUTE was developed. Numerical results show that even in
a finite beta plasma flute mode instability can develop along with formation of large
scale structures co-existing with short scale perturbations in the nonlinear stage.</p>