CaltechAUTHORS
  A Caltech Library Service

Measurement of coherent drift-wave ion-fluid velocity field when ion dynamics are stochastic

Bailey, A.D., III and Stern, R. A. and Bellan, P. M. (1993) Measurement of coherent drift-wave ion-fluid velocity field when ion dynamics are stochastic. Physical Review Letters, 71 (19). pp. 3123-3126. ISSN 0031-9007. http://resolver.caltech.edu/CaltechAUTHORS:BAIprl93

[img]
Preview
PDF
See Usage Policy.

1405Kb

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:BAIprl93

Abstract

In order to test the validity of the fluid drift approximation when ion dynamics are stochastic, the time-dependent ion-fluid velocity field in a coherent, drift-Alfvén wave has been measured in Caltech’s Encore tokamak using plasma planar laser induced fluorescence. Many measured parameters of the wave are well described by the drift approximation above a threshold for stochastic ion dynamics, including the flow pattern in the single measured component of the ion-fluid velocity field. Surprisingly, the theory fails at a fundamental level by predicting flow speeds 10 times larger than those measured (‖umax‖≊10^5 cm/s).


Item Type:Article
Additional Information:©1993 The American Physical Society. Received 4 February 1993. We wish to thank Frank Cosso for assistance with electronics. This work was supported bu NSF Grant No. PHY-9114146.
Record Number:CaltechAUTHORS:BAIprl93
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:BAIprl93
Alternative URL:http://dx.doi.org/10.1103/PhysRevLett.71.3123
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:9349
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:14 Dec 2007
Last Modified:26 Dec 2012 09:47

Repository Staff Only: item control page