TY - JOUR
T1 - Short wavelength fluctuations and electron transport in TFTR
AU - Wong, K. L.
AU - Itoh, K.
AU - Itoh, S. I.
AU - Fukuyama, A.
AU - Yagi, M.
N1 - Funding Information:
We would like to thank Dr. Norton Bretz for his work on the microwave scattering hardware on TFTR, and Dr. Gregory Schmidt for the transport analysis of these data. This work is supported by The United States Department of Energy Contract DE-AC02-76CH03073, and partly by the Grant-in-Aid for Scientific Research of Ministry of Education, Science, Sports and Culture of Japan.
PY - 2000/11/6
Y1 - 2000/11/6
N2 - Correlation between electron heat diffusivity and short wavelength (kρ(i) ~ 5) fluctuation amplitude was observed in the TFTR tokamak in the core of ERS plasmas (Phys. Lett. A 236 (1997) 339). These fluctuations propagate in the ion diamagnetic drift direction with wave number comparable to ω(pe)/C. Further analysis of these data yields the ratios χ(e)/χ(i) and χ(e)/D(e), and their values are consistent with the picture that the electron transport is mainly induced by the short wavelength fluctuations in the plasma core where the long wavelength (kρ(i) ~ 1) fluctuations are absent. Although there is not enough information to identify these short wavelength modes, the values of χ(e) is found to be comparable to theoretical predictions based on the current diffusive ballooning mode theory (Plasma Phys. Control. Fusion 36 (1994) 279). (C) 2000 Elsevier Science B.V.
AB - Correlation between electron heat diffusivity and short wavelength (kρ(i) ~ 5) fluctuation amplitude was observed in the TFTR tokamak in the core of ERS plasmas (Phys. Lett. A 236 (1997) 339). These fluctuations propagate in the ion diamagnetic drift direction with wave number comparable to ω(pe)/C. Further analysis of these data yields the ratios χ(e)/χ(i) and χ(e)/D(e), and their values are consistent with the picture that the electron transport is mainly induced by the short wavelength fluctuations in the plasma core where the long wavelength (kρ(i) ~ 1) fluctuations are absent. Although there is not enough information to identify these short wavelength modes, the values of χ(e) is found to be comparable to theoretical predictions based on the current diffusive ballooning mode theory (Plasma Phys. Control. Fusion 36 (1994) 279). (C) 2000 Elsevier Science B.V.
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U2 - 10.1016/S0375-9601(00)00669-1
DO - 10.1016/S0375-9601(00)00669-1
M3 - Article
AN - SCOPUS:0034613510
SN - 0375-9601
VL - 276
SP - 281
EP - 285
JO - Physics Letters, Section A: General, Atomic and Solid State Physics
JF - Physics Letters, Section A: General, Atomic and Solid State Physics
IS - 5-6
ER -