Helical quadrupole field stabilization of field-reversed configuration plasma

Journal Article · Wed Jan 01 00:00:00 EST 1986 · Fusion Technol.; (United States)

OSTI ID:6138098

Shimamura, S; Nogi, Y

The n = 2 mode rotational instability, which appears on a field-reversed configuration plasma produced by a theta pinch, is stabilized by a helical quadrupole field. The critical strength of the field to stabilize the instability is obtained as a function of pitch angle of the helical coil ..cap alpha.. rad/m. Typically, the plasma in the ..cap alpha.. = 6 winding field is stabilized by about one-fifth of ..cap alpha.. = 0 field strength. To physically explain such a good effectiveness of the helical field, the rotation speed of the plasma is measured by a Doppler shift of a carbon V 2270.9-A line. However, the clear explanation to the helical effect is not yet given.

• Research Organization: Nikon Univ., College of Science and Tech., Dept. of Physics, 1-8 Kanda-Surugadai, Chiyoda-ku, Tokyo 101
• OSTI ID: 6138098
• Journal Information: Fusion Technol.; (United States), Vol. 9:1
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
REVERSE-FIELD PINCH
PLASMA INSTABILITY
CARBON
DOPPLER EFFECT
INCIDENCE ANGLE
MAGNET COILS
MAGNETIC FIELD REVERSAL
QUADRUPOLAR CONFIGURATIONS
ROTATION
STABILIZATION
VELOCITY
CLOSED CONFIGURATIONS
ELECTRIC COILS
ELECTRICAL EQUIPMENT
ELEMENTS
EQUIPMENT
INSTABILITY
MAGNETIC FIELD CONFIGURATIONS
MOTION
MULTIPOLAR CONFIGURATIONS
NONMETALS
PINCH EFFECT
700202* - Fusion Power Plant Technology- Magnet Coils & Fields
700107 - Fusion Energy- Plasma Research- Instabilities