Transport in a stochastic magnetic field

Conference · Wed Jan 01 04:00:00 EST 1992

OSTI ID:7034312

White, R B; Wu, Yanlin ^[1]; Rax, J M ^[2]

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1. Princeton Univ., NJ (United States). Plasma Physics Lab.
2. Association Euratom-CEA, Centre d'Etudes Nucleaires de Cadarache, 13 -Saint-Paul-lez-Durance (France). Dept. de Recherches sur la Fusion Controlee

Collisional heat transport in a stochastic magnetic field configuration is investigated. Well above stochastic threshold, a numerical solution of a Chirikov-Taylor model shows a short-time nonlocal regime, but at large time the Rechester-Rosenbluth effective diffusion is confirmed. Near stochastic threshold, subdiffusive behavior is observed for short mean free paths. The nature of this subdiffusive behavior is understood in terms of the spectrum of islands in the stochastic sea.

• Research Organization: Princeton Univ., NJ (United States). Plasma Physics Lab.
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 7034312
• Report Number(s): PPPL-CFP-2654; CONF-9207112--2; ON: DE92018445
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700330* -- Plasma Kinetics
Transport
& Impurities-- (1992-)
CLOSED PLASMA DEVICES
COLLISIONAL PLASMA
CONFINEMENT
DIFFUSION
ENERGY TRANSFER
EQUATIONS
HEAT TRANSFER
LANGEVIN EQUATION
MAGNETIC CONFINEMENT
MAGNETIC FIELDS
MEAN FREE PATH
PLASMA
PLASMA CONFINEMENT
STOCHASTIC PROCESSES
THERMONUCLEAR DEVICES
TOKAMAK DEVICES