kink instability

kink instability

[′kiŋk ‚in·stə′bil·əd·ē]
(plasma physics)
A type of hydromagnetic instability in which the ionized gas and its magnetic confining field tend to form a loop or kink, which then grows steadily larger. Also known as sausage instability.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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When we model the soft X-ray jet as a moving twisted magnetic flux tubes, there are two types of instabilities that can develop in the jet: namely, kink instability due to the twist of the magnetic field and KH instability owing to the tangential discontinuity of plasma velocity at the tube boundary.