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Kinetic theory of the electromagnetic drift modes driven by pressure gradients

 

作者: W. Horton,   J. E. Sedlak,   Duk‐In Choi,   B. G. Hong,  

 

期刊: Physics of Fluids(00319171)  (AIP Available online 1985)
卷期: Volume 28, issue 10  

页码: 3050-3060

 

ISSN:0031-9171

 

年代: 1985

 

DOI:10.1063/1.865146

 

出版商: AIP

 

数据来源: AIP

 

摘要:

Kinetic equations for the electromagnetic drift modes are derived and analyzed for the stability of tokamaks in the local approximation. In the dissipationless, hydrodynamic limit, the fifth‐order polynomial dispersion relation previously studied is recovered. The kinetic velocity space integrals in the ion dynamics are shown to modify the five principal modes of oscillation and their polarizations. It is shown that in kinetic stability theory the critical plasma pressure defined in magnetohydrodynamic theory determines a transition from microinstability to macroinstability.

 

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