Dynamically accessible perturbations and magnetohydrodynamic stability
It is shown that restricting the perturbations of a magnetohydrodynamic plasma equilibrium state with flow to those that are dynamically accessible yields the same stability criterion as the one obtained by minimizing the plasma energy subject to given values of all constants of the motion. This cri...
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| Published in | Physics of plasmas Vol. 10; no. 7; pp. 2643 - 2648 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
01.07.2003
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| Online Access | Get full text |
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| Summary: | It is shown that restricting the perturbations of a magnetohydrodynamic plasma equilibrium state with flow to those that are dynamically accessible yields the same stability criterion as the one obtained by minimizing the plasma energy subject to given values of all constants of the motion. This criterion is sharper than the classical one, which is based on the second variation of the potential energy
(δW). |
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| ISSN: | 1070-664X 1089-7674 |
| DOI: | 10.1063/1.1577122 |