TITLE

Measurements of plasma fluctuations with a heavy-ion beam probe

AUTHOR(S)
Hallock, G. A.; Schoch, P. M.; Saadatmand, K.; Hickok, R. L.; Jennings, W. C.; Connor, K. A.
PUB. DATE
May 1985
SOURCE
Review of Scientific Instruments;May85, Vol. 56 Issue 5, p1038
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A heavy-ion beam probe can provide simultaneous, spatially resolved measurements of &φtilde;; and (ñσ[sub eff]) in magnetically confined plasmas. Capabilities have been demonstrated on TMX, RENTOR, and ISX-B using single detector systems, which permit the evaluation of the frequency spectra out to several hundred kilohertz. The cross correlation and phase difference between ñ and. &φtilde; are also obtained by assuming &Ttilde;[sub e] fluctuations to be negligible. Present development effort is focused on the use of multiple detectors and multiple ion species. These should allow the determination of both the frequency and wave number spectra for ñ, &φtilde;, and &Ttilde;[sub e]. The resolution and limitation of these techniques and their application to studying fluctuationinduced transport will be discussed.
ACCESSION #
9785373

 

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