ON ANOMALOUS PLASMA TRANSPORT AS A WIENER PROCESS
A recent theory by Molvig et al. on particle transport in turbulent fields with overlapping island structure is critically reviewed. An inconsistency in the derivation of the diffusion coefficient D from the assumption of a Wiener process is pointed out and corrected. In the region GW-.tau-K >> 1 the results if properly interpreted are unchanged. For GW-.tau-K << 1 the results differ (-GW = particle velocity/mode correlation length, tau-K = randomization time. Computer experiments are performed to support the critical arguments.
Bibliographic Reference: WRITE TO MAX-PLANCK-INSTITUT FUER PLASMAPHYSIK, 8046 GARCHING BEI MUENCHEN (GERMANY), MENTIONING REPORT IPP 6/229, 1983
Record Number: 1989122019700 / Last updated on: 1987-01-01
Available languages: en