Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990esasp.311..177t&link_type=abstract
In ESA, Plasma Astrophysics p 177-182 (SEE N91-15046 06-90)
Astronomy and Astrophysics
Astrophysics
Cylindrical Plasmas, Holes (Electron Deficiencies), Magnetic Fields, Magnetic Mirrors, Nonlinearity, Turbulent Heat Transfer, Boundary Conditions, Computerized Simulation, Magnetic Effects, Spatial Resolution, Temporal Resolution
Scientific paper
Nonlinear phenomena such as electron hole, double layer, and turbulent heating, which were observed in a linear mirror device, THE NU-II, are reviewed. Observations were carried out with a temporal resolution of 2 ns and a spatial resolution of 1 mm, respectively. Upon applying a voltage difference of the order of 10 kV between two electrodes inserted in the cylindrical plasma at a distance of 67 cm, the nonlinear phenomena evolved consecutively. In particular, a strong current limited double layer was formed, and its lifetime was found to satisfy a simple empirical law. One dimensional computer simulations based on a kinetic code were carried out with boundary conditions close to the experimental ones. The effect of magnetic field was taken into consideration in the simulations.
Inuzuka Hiroshi
Tsukishima T.
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