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Abstract

With the single frequency swept reflectometry diagnostic on ASDEX Upgrade radial correlation lengths of the plasma turbulence can be determined by a new quasi-simultaneous correlation technique. The scaling of the observed microturbulence is investigated in detail through the correlation lengths measured 2cm inside the separatrix. During the low-temperature L-mode and near the L-H transition these scale according to the resistive ballooning turbulence model. For L- and H-mode plasmas with higher temperatures the correlation length scale with the effective Larmour radius as expected for dominantly ni driven turbulence.

Additional information

Authors: MAX-PLANCK-INSTITUT FUR PLASMAPHYSIK, ;GARCHING (DE),
Bibliographic Reference: Article: Plasma Physics and Controlled Fusion, 42 (2000), 237-253
Record Number: 200011978 / Last updated on: 2000-05-12
Category: PUBLICATION
Original language: en
Available languages: en
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