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Non-ambipolar transport in a magnetic divertor

Technical Report ·
DOI:https://doi.org/10.2172/5467052· OSTI ID:5467052
Plasma transport is studied in a simulated magnetic divertor in the Wisconsin single ring DC machine. The transport perpendicular and parallel to the magnetic field is shown to be non-ambipolar by a variety of measurements, but can be forced to be ambipolar by an appropriately designed divertor target plate. The density profile in the scrape-off zone agrees with the predictions of a one-dimensional diffusion equation that assumes classical cross-field transport and plasma flow parallel to the field at the local ion acoustic velocity.
Research Organization:
Wisconsin Univ., Madison (USA)
Sponsoring Organization:
USDOE Asslstant Secretary for Energy Technology
DOE Contract Number:
AS02-76ET53051
OSTI ID:
5467052
Report Number(s):
DOE/ET/53051-3
Country of Publication:
United States
Language:
English