Size Scaling of Turbulent Transport in Magnetically Confined Plasmas

Technical Report · Fri Apr 05 04:00:00 EST 2002

DOI:https://doi.org/10.2172/796224· OSTI ID:796224

Lin, Z ^[1]; Ethier, S; Hahm, T S; Tang, W M

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1. Princeton Plasma Physics Laboratory

Transport scaling with respect to device size in magnetically confined plasmas is critically examined for electrostatic ion temperature gradient turbulence using global gyrokinetic particle simulations. It is found, by varying device size normalized by ion gyroradius while keeping other dimensionless plasma parameters fixed, that fluctuation scale length is microscopic in the presence of zonal flows. The local transport coefficient exhibits a gradual transition from a Bohm-like scaling for device sizes corresponding to present-day experiments to a gyro-Bohm scaling for future larger devices.

• Research Organization: Princeton Plasma Physics Lab., NJ (US)
• Sponsoring Organization: USDOE Office of Science (US)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 796224
• Report Number(s): PPPL-3685.pdf
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ELECTROSTATICS
FLUCTUATIONS
ION TEMPERATURE
PLASMA
TRANSPORT
TURBULENCE