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Title: Current Driven Rotating Kink Mode in a Plasma Column with Non-Line-Tied Free End

First experimental measurements are presented for the kink instability in a linear plasma column which is insulated from an axial boundary by finite sheath resistivity. Instability threshold below the classical Kruskal-Shafranov threshold, axially asymmetric mode structure and rotation are observed. These are accurately reproduced by a recent kink theory, which includes axial plasma flow and one end of the plasma column that is free to move due to a non-line-tied boundary condition.
Authors:
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Publication Date:
OSTI Identifier:
894341
Report Number(s):
UCRL-JRNL-220196
TRN: US0700149
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters, vol. 97, no. 1, July 7, 2006, pp. 015002
Research Org:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BOUNDARY CONDITIONS; INSTABILITY; KINK INSTABILITY; PLASMA; ROTATION