1.
Phys Rev Lett
; 97(1): 015002, 2006 Jul 07.
Artigo
em Inglês
| MEDLINE
| ID: mdl-16907381
RESUMO
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. An 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.