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(EX7/1) H-Mode Power Threshold and Confinement in JET H, D, D-T and T Plasmas

   
The JET Team 1 (presented by J. G. Cordey )
1 see Appendix to IAEA-CN-69/OV1/2

 
JET Joint Undertaking, Abingdon, Oxfordshire, United Kingdom

Abstract
The scaling of both the L-H threshold and confinement with the mass M of the hydrogenic isotopes is discussed. The confinement in the core and edge are found to scale differently with M and a two region model is developed to represent the physical behaviour of each region. Identity pulses with the same profiles of the dimensionless physics parameters $\rho^*, \nu^*$ and $\beta $ are obtained with different isotopes, H and D; this result suggests that there is no explicit mass dependence of the transport in either the core or edge regions.

         

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IAEA 1999