Classical Transport Coefficents in - 4 Field - Reversed Configuration ”
نویسنده
چکیده
Abstract-A Hill’s Vortex equilibrium model is utilized to calculate the classical transport properties of a plasma confined in a field-reversed magnetic configuration. Consistent with zero dimensional steady state conservation of particles and energy we compute the corresponding fluxes at the separatrix using volume-averaged values for the density and conductivity. We find that the confinement times scale directly with the size of the Vortex and conductivity at that point, and inversely with a function of the profile parameter.
منابع مشابه
Field Dependent Charge Carrier Transport for Organic Semiconductors at the Time of Flight Configuration
In this paper, we used the time-of-flight (TOF) of a charge packet, that injected by a voltage pulse to calculate the drift velocity and mobility of holes in organic semiconducting polymers. The technique consists in applying a voltage to the anode and calculating the time delay in the appearance of the injected carriers at the other contact. The method is a simple way to determine the charge t...
متن کاملLocalizing of a Four-Level Atom via Absorption Spectrum
We propose a scheme for localizing an atom in a four-level configuration inside a classical standing wave field, conditioned upon the measurement of frequency of a weak probe field. In the classical standing wave field, the interaction between the atom and the field is position dependent due to the Rabi-frequency of the driving field. Hence, as the absorption frequency of the probe field is mea...
متن کاملNeoclassical transport in the helical reversed-field pinch.
Test particle evaluation of the diffusion coefficient in a fusion plasma in the reversed-field pinch (RFP) configuration shows distinct similarities with stellarators when the plasma spontaneously evolves towards a helical shape. The almost total absence of superbanana particles at the levels of helical deformation seen in experiment (Bh/B=10%) causes transport to be proportional to collision f...
متن کاملUWFDM-1102 Energy and Particle Confinement Times for a Field-Reversed Configuration
The energy and particle lifetime scalings in a field-reversed configuration (FRC) are shown to depend on transport regimes and geometric parameters. The improved formulas have been compared with other empirical and theoretical scaling laws. The result is that confinement time dependence agrees with experimental measurements (for the present status of the experiments Ti ≤ 1 keV and s > 1) of ene...
متن کاملMomentum transport from current-driven reconnection in the reversed field pinch.
We calculate momentum transport from tearing fluctuations in a reversed field pinch with sheared flow, considering both the effect of a single tearing mode (through quasilinear theory and MHD computation) and multiple tearing modes (through nonlinear MHD computation). A single tearing mode transports momentum, via Maxwell and Reynolds stresses, more rapidly than classical viscous forces. Moreov...
متن کامل