Particle diffusion coefficient across the magnetic field due to electrostatic turbulence
Particle diffusion across a strong magnetic field is studied both in a three wave dynamical system which appears to be chaotic with a threshold of large scale stochastic diffusion, and in a k(-3) spectrum of electrostatic turbulence. The theoretical predictions of the non-linear theory are in reasonable agreement with the results of particle simulations. Both results indicate a continuous transition between a classical scaling of the diffusion coefficients (D proportional to 1/B2) at low amplitudes to a Bohm scaling (D proportional to 1/B) at larger amplitudes.
Bibliographic Reference: Paper presented: 12ème Conférence Internationale sur la Physique des Plasmas et la Recherche Concernant la Fusion Nucléaire Contrôlèe, Nice (FR), October 12-19, 1988
Availability: Available from (1) as Paper EN 34081 ORA
Record Number: 199011232 / Last updated on: 1994-12-01
Original language: en
Available languages: en