High. beta. studies in the Wisconsin Toroidal Octupole

Technical Report · Mon Sep 01 04:00:00 EDT 1980

DOI:https://doi.org/10.2172/6894906· OSTI ID:6894906

Halle, J. H.; Kellman, A.; Post, R. S.; Prager, S. C.; Strait, E. J.; Zarnstorff, M. C.

A wide range of MHD stable high ..beta.. plasmas is produced in the Wisconsin Levitated Octupole. At or near the single fluid regime we obtain, in the bad curvature region, ..beta.. = nk(T/sub e/ + T/sub i/)8..pi../B/sup 2/ approx. = 8%, twice the theoretical single fluid ballooning instability limit of 4%. We also obtain stable plasmas at ..beta.. approx. = 35%, 9 times the theoretical limit, in a regime in which both finite ion gyroradius and gyroviscosity effects are important.

• Research Organization: Wisconsin Univ., Madison (USA)
• Sponsoring Organization: USDOE Asslstant Secretary for Energy Technology
• DOE Contract Number: AS02-76ET53051
• OSTI ID: 6894906
• Report Number(s): DOE/ET/53051-9
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107* -- Fusion Energy-- Plasma Research-- Instabilities
BALLOONING INSTABILITY
BETA RATIO
CLOSED CONFIGURATIONS
CLOSED PLASMA DEVICES
HIGH-BETA PLASMA
INSTABILITY
MAGNETIC FIELD CONFIGURATIONS
MULTIPOLAR CONFIGURATIONS
OCTUPOLAR CONFIGURATIONS
PLASMA
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
THERMONUCLEAR DEVICES
TOKAMAK DEVICES