@inproceedings{97d2e822efb74f9a9a7e05701959431c,
title = "Advances in transport understanding using perturbative techniques in TFTR",
abstract = "The parametric dependence of transport in TFTR plasmas is investigated using perturbative techniques. By perturbing the current in L-mode plasmas; the thermal transport outside r approximately a/2 is found to be insensitive to the plasma current or its shape. As a consequence, it is found that the global confinement can be strongly enhanced or reduced relative to L-mode scaling at fixed Ip by modifying the current profile. The density profile has been perturbed in supershot plasmas to force the plasma far above the stability threshold for ITG-modes. The ion transport in supershots is found to not be governed by marginal stability to the ITG-mode. Density pulse propagation studies of L-mode plasmas indicate that the electron particle transport varies as Te1.5-2.5 and that the diffusivity of trace amounts of helium is similar to the thermal diffusivities. Both measurements are consistent with electrostatic transport models.",
author = "Zarnstorff, {M. C.} and Barnes, {C. W.} and Efthimion, {P. C.} and Hammett, {G. W.} and W. Horton and Hulse, {R. A.} and Mansfield, {D. K.} and Marmar, {E. S.} and McGuire, {K. M.} and G. Rewoldt and Stratton, {B. C.} and Synakowski, {E. J.} and Tang, {W. M.} and Terry, {J. L.} and Xu, {X. Q.} and Bell, {M. G.}",
year = "1991",
language = "English",
isbn = "9201300913",
series = "Proc 13 Int Conf Plasma Phys Controlled Nucl Fusion Res",
pages = "109--122",
booktitle = "Proc 13 Int Conf Plasma Phys Controlled Nucl Fusion Res",
}