Radiative divertor plasmas with convection in DIII-D [electronic resource].
- Washington, D.C. : United States. Dept. of Energy. Office of Energy Research, 1998. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- 34 pages : digital, PDF file
- Additional Creators:
- General Atomic Company, United States. Department of Energy. Office of Energy Research, and United States. Department of Energy. Office of Scientific and Technical Information
- The radiation of divertor heat flux on DIII-D is shown to greatly exceed the limits imposed by assumptions of energy transport dominated by electron thermal conduction parallel to the magnetic field. Approximately 90% of the power flowing into the divertor is dissipated through low Z radiation and plasma recombination. The dissipation is made possible by an extended region of low electron temperature in the divertor. A one-dimensional analysis of the parallel heat flux finds that the electron temperature profile is incompatible with conduction dominated parallel transport. Plasma flow at up to the ion acoustic speed, produced by upstream ionization, can account for the parallel heat flux. Modeling with the two-dimensional fluid code UEDGE has reproduced many of the observed experimental features.
- Published through SciTech Connect., 01/01/1998., "ga--a22787", " conf-971103--", "DE98004686", 39. annual meeting of the Division of Plasma Physics of the American Physical Society, Pittsburgh, PA (United States), 17-21 Nov 1997., and Wood, R.D.; Porter, G.D.; Leornard, A.W.
- Funding Information:
- AC03-89ER51114, W-7405-ENG-48, AC05-96OR22464, AC04-94AL85000, FG03-95ER54294, and 3466
View MARC record | catkey: 14741936