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Ion collisionality and L–H transition in tokamaks

 

作者: K. C. Shaing,   P. J. Christenson,  

 

期刊: Physics of Fluids B: Plasma Physics  (AIP Available online 1993)
卷期: Volume 5, issue 3  

页码: 666-668

 

ISSN:0899-8221

 

年代: 1993

 

DOI:10.1063/1.860511

 

出版商: AIP

 

数据来源: AIP

 

摘要:

When the previous H‐mode theory [K. C. Shaing and E. C. Crume, Jr., Phys. Rev. Lett.63, 2369 (1989)] is extended to include a bi‐Maxwellian ion distribution with both cold and hot ion components to model the effects of the non‐Maxwellian distribution, the collisionality of the cold ions &ngr;*icbecomes an irrelevant bifurcation parameter, as it is for the electrode‐induced H mode. Thus, the observation that the L–H transition can occur even when &ngr;*ic≫1 is consistent with the fundamental physics of the ion orbit loss model, including a hot ion component.

 

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