ELECTRON-TRANSPORT IN THE STOCHASTIC FIELDS OF THE REVERSED-FIELD PINCH

We employ the Monte Carlo method for the calculation of anomalous tran sport developed by Punjabi and Boozer to calculate the particle diffus ion coefficient for electrons in the stochastic magnetic fields of the reversed-field pinch (RFP), In the Monte Carlo calculations represent ed here, the transport mechanism is the loss of magnetic surfaces due to resistive perturbations. The equilibrium magnetic fields are repres ented by the Bessel function model for the RFP. The diffusion coeffici ent D is calculated as a function of a, the amplitude of the perturbat ion. We see three regimes as the amplitude of the tearing modes is inc reased: the Rechester-Rosenbluth regime where D scales as a(2); the an omalous regime where D scales more rapidly than a(2); and the Mynick-K rommes regime where D scales more slowly than a(2). Inclusion of the e ffects of loop voltage on the particle drift orbits in the RFP does no t affect the intervals in the amplitude a where these regimes operate.