On the stability of twisted magnetic fields |
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| Authors: | S K Trehan Manohar Singh |
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| Institution: | (1) Dept. of Mathematics, Simon Fraser University, Burnaby, B.C., Canada;(2) Present address: Department of Mathematics, Panjab University, Chandigarh, India |
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| Abstract: | The stability of helical magnetic fields is investigated when fluid motions are present along the lines of force. The general dispersion relation is obtained and some limiting cases are examined. It is established that the configuration can be unstable when the velocity field exceeds a certain critical value. This result is to be compared with the case when the helical fields confined by a rigid boundary are stable when the energy density in the velocity field is at least equal to that of the magnetic field. |
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