Physics
Scientific paper
Aug 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jplph..40...97s&link_type=abstract
Journal of Plasma Physics (ISSN 0022-3778), vol. 40, Aug. 1988, p. 97-107.
Physics
1
Magnetoplasmadynamics, Monochromatic Radiation, Nonuniform Plasmas, Particle Diffusion, Plasmas (Physics), Tokamak Devices, Wave Propagation, Equations Of Motion, Hamiltonian Functions, Poincare Problem
Scientific paper
Particle diffusion in phase space due to the crossing of multiple cyclotron resonances in an inhomogeneous magnetic field is investigated. The influence of the inhomogeneity is most significant for small wave amplitudes, when stochastic heating is absent in a homogeneous plasma. The diffusion depends on the relationship between the wave amplitude, the inhomogeneity parameter and the angle of wave propagation. The dependence of the diffusion coefficients upon the mentioned parameters is investigated by means of computer simulations for the case of constant inhomogeneity and for two models of variable inhomogeneity: a monotonic change typical of magnetospheric conditions, and a sinusoidal change typical of tokamaks.
Shkliar D. R.
Solov'ev V. V.
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