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Motion of the ablation cloud in torus plasmas

Published online by Cambridge University Press:  20 December 2006

RYUICHI ISHIZAKI ,
N. NAKAJIMA ,
M. OKAMOTO  and
P. B. PARKS
RYUICHI ISHIZAKI
Affiliation:
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
N. NAKAJIMA
Affiliation:
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
M. OKAMOTO
Affiliation:
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
P. B. PARKS
Affiliation:
General Atomics, San Diego, CA 92186-5608, USA
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Abstract

The motion of an ablation cloud is investigated in a tokamak by using ideal magnetohydrodynamic equations with ablation processes. The cloud quickly expands along the magnetic field and simultaneously drifts to the lower field side due to a tire tube force and 1/R force. It is found that the acceleration of the cloud increases and subsequently decreases due to the energy deposit from the bulk plasma and, finally, the cloud is stopped due to the poloidal field.

Type
Papers
Information
Journal of Plasma Physics , Volume 72 , Issue 6 , December 2006 , pp. 1159 - 1162
Copyright
2006 Cambridge University Press

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