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1 - Nuclear Sciences and Applications - IAEA

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286 KIM et ah<br />

In summary, we observe that the temperature perturbation generated from the<br />

sawtooth crash is accompanied by a density perturbation of comparable magnitude.<br />

Both the density <strong>and</strong> temperature perturbations are found to be transported out<br />

through the confinement zone of TEXT at the same rate <strong>and</strong> in a manner consistent<br />

with a diffusive process. In addition, the scalings of (r 2 /^) for particles <strong>and</strong> heat are<br />

measured to be similar. These results indicate that particle <strong>and</strong> thermal transport for<br />

sawtooth induced perturbations are coupled. Future work will include a heat transport<br />

model consistent with a finite density perturbation <strong>and</strong> measurements of the transport<br />

coupling during electron cyclotron resonance heating on TEXT.<br />

ACKNOWLEDGEMENT<br />

This work is supported by the US Department of Energy under Contract<br />

Nos DE-FG03-86ER-53225 <strong>and</strong> DE-AC05-78ET-53043.<br />

REFERENCES<br />

[1] KIM, S.K., BROWER, D.L., PEEBLES, W.A., LUHMANN, N.C., Jr., Phys. Rev. Lett. 60<br />

(1988) 577.<br />

[2] KIM, S.K., BROWER, D.L., PEEBLES, W.A., LUHMANN, N.C., Jr., High-resolution multichannel<br />

interferometric measurement of sawtooth density-pulse propagation, to be published in<br />

Rev. Sci. Instrum. (1989).<br />

[3] FREDRICKSON, E., et al., Nucl. Fusion 26 (1986) 849.<br />

[4] GENTLE, K.W., RICHARDS, B., WAELBROECK, F., Plasma Phys. Controll. Fusion 29<br />

(1987) 1077.<br />

[5] WOOTTON, A.J., et al., in Plasma Physics <strong>and</strong> Controlled <strong>Nuclear</strong> Fusion Research 1986<br />

(Proc. 11th Conf. Kyoto, 1986), Vol. 1, <strong>IAEA</strong>, Vienna (1987) 187.

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