Transport in a stochastic magnetic field

Conference · Tue Sep 01 00:00:00 EDT 1992

OSTI ID:10169907

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: USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 10169907
• Report Number(s): PPPL-CFP-2654; CONF-9207112-2; ON: DE92018445
• Resource Relation: Conference: 2. symposium on plasma dynamics,Trieste (Italy),8-10 Jul 1992; Other Information: PBD: [1992]
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
MAGNETIC CONFINEMENT
HEAT TRANSFER
MAGNETIC FIELDS
DIFFUSION
STOCHASTIC PROCESSES
LANGEVIN EQUATION
COLLISIONAL PLASMA
MEAN FREE PATH
TOKAMAK DEVICES
700330
PLASMA KINETICS, TRANSPORT, AND IMPURITIES