Isotope mass scaling of AE damping rates in the JET tokamak plasmas

A.Fasoli, A.Jaun+, D.Testa*
Phys. Lett. A 265 (2000) 288

Physics Department and Plasma Science and Fusion Center, MIT, Cambridge MA 02139, USA
+)Alfvén Laboratory, Teknikringen 31, KTH, SE-100 44 Stockholm, Sweden
*)JET, Abingdon, Oxfordshire OX14 3EA, United Kingdom

The damping of radially extended Alfvén Eigenmodes in tokamak plasmas is investigated in JET discharges with different ion mass. The comparison of damping measurements with predictions of a gyro-kinetic model indicates that mode conversion into kinetic Alfvén Waves is the dominant damping mechanism for Alfvén Eigenmodes in the plasma core.

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