N.N. Gorelenkov and W.W. Heidbrink 2002 Nucl. Fusion 42 150 doi:10.1088/0029-5515/42/2/305
N.N. Gorelenkov1 and W.W. Heidbrink2
Show affiliationsDuring beam injection in the DIII-D tokamak, modes with lower frequencies than expected for toroidicity induced Alfvén eigenmodes (TAEs) are often observed. The experimental `TAE' frequency is often ≈0.8 of the nominal theoretical frequency of the TAE, fTAE, while the typical frequency of beta induced Alfvén eigenmodes (BAEs) is (0.2-0.4)fTAE. An analysis is presented of an unstable discharge with a high n stability code, HINST, that includes the effect of energetic ions on mode frequency. The analysis shows that the experimental `TAE' and `BAE' could be resonant branches of the TAE and the kinetic ballooning mode, respectively.
52.35.Bj Magnetohydrodynamic waves (e.g., Alfven waves)
52.55.Tn Ideal and resistive MHD modes; kinetic modes
Issue 2 (February 2002)
Received 17 April 2000, accepted for publication 3 August 2001
Published 15 February 2002
N.N. Gorelenkov and W.W. Heidbrink 2002 Nucl. Fusion 42 150
B D Hall 2007 Metrologia 44 L62
A J M Medved et al 2004 Class. Quantum Grav. 21 1393
Guillaume van Baalen 2002 Nonlinearity 15 315
Dénes Molnár 2005 J. Phys. G: Nucl. Part. Phys. 31 S421
A Burdakin et al 2008 Metrologia 45 75
Katsuhiro Yokota et al 2004 J. Phys. D: Appl. Phys. 37 1095
H Baumann et al 2009 Metrologia 46 178
Erich Gaertig and Kostas D Kokkotas 2009 J. Phys.: Conf. Ser. 189 012016
2005 J. Radiol. Prot. 25 101