Effective plasma heat conductivity in ''braided'' magnetic field: Pt. 1

Anomalous cross-field electron transport in a specified magnetic field with weakly-destroyed flux surfaces is discussed. The regimes of effective transverse plasma transport are studied systematically, both in the collisional and collisionless limits. The present analysis incorporates the non-stationarity of magnetic perturbations. It is found that some of the previously-described transport regimes cannot be considered as anomalous (in the sense that effective heat conduction χeff >> χperpendicular for time-independent magnetic perturbations. However, these regimes can exist in the presence of a finite-frequency magnetic flutter. A unified classification of quasi-linear regimes of anomalous transport is introduced in order to further extend the analysis to the strong magnetic turbulence limit b0L0/δ >> 1. (author)