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001     32986
005     20240711113510.0
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041 _ _ |a eng
082 _ _ |a 530
084 _ _ |2 WoS
|a Nuclear Science & Technology
100 1 _ |a Rogister, A.
|b 0
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245 _ _ |a Low frequency instabilities in confined plasmas, concepts and theoretical framework
260 _ _ |a La Grange Park, Ill.
|b American Nuclear Society
|c 2004
300 _ _ |a 338 - 345
336 7 _ |a Journal Article
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440 _ 0 |a Fusion Science and Technology
|x 1536-1055
|0 8121
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|v 45
500 _ _ |a Record converted from VDB: 12.11.2012
520 _ _ |a Most experts consider that anomalous energy and particle transport in fusion devices are due to low frequency waves whose free energy sources are the equilibrium gradients and the associated drifts across the confining magnetic field (drift waves). We consider successively the cases where k(\\)qR much greater than 1 and k(\\)qR similar to 1 where k(\\) is the parallel wave number, qR being the connection length. The first limit is particularly adequate if the gradient of the parallel flow velocity is significant; exact stability criteria are then obtained with the help of the Nyquist diagram in the framework of the local dispersion relation which applies. That is not the case if k(\\)qR similar to 1 : here, the stability analysis leads to second order differential equations whose complex eigenvalues provide the wave frequencies and the growth/decay rates. The theoretical concepts are developed successively for cylindrical and axi-symmetric toroidal geometries. Electrons are considered to be adiabatic.
536 _ _ |a Kernfusion und Plasmaforschung
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773 _ _ |g Vol. 45, p. 338 - 345
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|t Fusion science and technology
|v 45
|y 2004
|x 1536-1055
856 4 _ |u https://juser.fz-juelich.de/record/32986/files/36949.pdf
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|v Kernfusion und Plasmaforschung
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920 1 _ |k IPP
|l Institut für Plasmaphysik
|d 31.12.2006
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