ISSN:
1089-7674
Quelle:
AIP Digital Archive
Thema:
Physik
Notizen:
In this paper we present results related to studies of low frequency electrostatic fluctuations in a toroidal plasma of varying length and without a toroidal current. The toroidal length of plasma is varied from fully toroidal (major radius R=45 cm) to 278, 212 and 142 cm. The characteristics of fluctuations changed, showing the effect of finite system length on the nature of the fluctuations. The major results are (1) a drastic reduction in the amplitude of fluctuations, (2) this reduction is mainly due to the disappearance of coherent peaks at 3 kHz and its harmonics observed in unbounded system, (3) the presence of a broad coherent feature around 10 kHz, only in bad curvature region, at low magnetic field (200 G) and (4) the appearance of a large number of coherent peaks, in one particular system length, at a higher magnetic field (400 G). These results indicate that the Rayleigh–Taylor instability with finite k|| may be excitable in the device. © 1997 American Institute of Physics.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1063/1.872428
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