Articles / Dissertation with Citations to Z. Abou-Assaleh

 

 2004
 
Phys. Rev. Lett. 92, 205006 (2004)
Effect of Nonlocal Transport on Heat-Wave Propagation
G. Gregori, S. H. Glenzer, J. Knight, C. Niemann, D. Price, D. H. Froula, M. J. Edwards, and R. P. J. Town
Lawrence Livermore National Laboratory, University of California, P.O. Box 808, California 94551, USA
A. Brantov and W. Rozmus
Department of Physics, University of Alberta, Edmonton, Alberta, Canada T6G 2J1
V. Yu. Bychenkov
P. N. Lebedev Physics Institute, Russian Academy of Sciences, Moscow 117924, Russia

We present the first direct measurements of spatially and temporally resolved temperature and density profiles produced by nonlocal transport in a laser plasma. Absolutely calibrated measurements have been performed by Rayleigh scattering and by resolving the ion-acoustic wave spectra across the plasma volume with Thomson scattering. We find that the electron temperature and density profiles disagree with flux-limited models, but are consistent with nonlocal transport modeling. ©2004 The American Physical Society

 

Effect of Nonlocal Transport on Heat-Wave Propagation
URL: http://link.aps.org/abstract/PRL/v92/e205006
 
 
 2004
 
Contributions to Plasma Physics

Volume 44, Issue 4 , Pages 352 - 360

Published Online: 8 Jun 2004

Copyright © 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

H. Kastelewicz, G. Fussmann *
Humboldt-Universität zu Berlin, Institut für Physik Experimentelle Plasmaphysik, Germany

*Correspondence to G. Fussmann, Humboldt-Universität zu Berlin, Institut für Physik Experimentelle Plasmaphysik, Germany

Abstract
Deuterium discharges in the PSI device have been modelled using the coupled package of the B2 hydrodynamic plasma code and the Eirene Monte-Carlo neutral code. Radial and axial plasma profiles have been calculated for different magnetic field configurations, various radial diffusion laws and for different values of the flux limiter in the parallel electron heat conduction law used in the B2 code. The results are compared with experimental findings. The axial variation of the magnetic field strength is found to have an important influence on the plasma state via the axial plasma flow which closely resembles the neutral gas streaming through a series of laval nozzles. For particular magnetic field configurations, an appropriate ansatz for the parallel electron heat conduction turns out to be a crucial point for the applicability of hydrodynamic models to linear devices like the plasma generator PSI. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
Received: 5 September 2003; Accepted: 5 April 2004
 
 
 2004
 

Physica Scripta. Vol. T108, 7–13, 2004

Simulation of the Edge Plasma in Tokamaks

D. P. Coster1, X. Bonnin2, B. Braams3, D. Reiter4, R. Schneider2 and the ASDEX Upgrade Team

1 Max-Planck-Institut fu¨ r Plasmaphysik, EURATOM Association, Garching, Germany

2 Max-Planck-Institut fu¨ r Plasmaphysik, EURATOM Association, Greifswald, Germany

3 Courant Institute, New York University, New York, NY, USA

4 Institut fu¨ r Plasmaphysik, FZ Ju¨ lich, EURATOM Association, Ju¨ lich, Germany

Abstract

Edge plasma modelling is discussed with particular emphasis on the comparison of a fluid neutral model with a kinetic neutral model. By iterative inclusion of additional effects, the agreement between the two is improved. Of particular importance is the proper treatment of neutrals at the core boundary, the proper implementation of a neutral flux limit, and the modification of the ion heat boundary condition to include the neutral contribution. In the end, the agreement in the upstream profiles of electron and ion temperatures, and of electron and neutral core densities is very satisfactory. In addition, the effects of parallel ion and electron heat flux limiters, of transport ballooning to the low field side, and of drifts are investigated.

 

http://www.ipp.mpg.de/~dpc/ibmtok1/dpc/hinm_paper_2003.pdf
Physica Scripta Online Vol. T108,? 7,? 2004

Simulation of the Edge Plasma in Tokamaks

D. P.? Coster, Max-Planck-Institut f?smaphysik,? EURATOM Association,? Garching,? Germany.
X.? Bonnin, Max-Planck-Institut f?smaphysik,? EURATOM Association,? Greifswald,? Germany.
B.? Braams, Courant Institute,? New York University,? New York,? USA.
D.? Reiter, Institut f?smaphysik, FZ J?? EURATOM Association,? J?? Germany.
R.? Schneider, Max-Planck-Institut f?smaphysik,? EURATOM Association,? Greifswald,? Germany.
ASDEX Upgrade Team? ,
 

Received? June 26, 2003; accepted?August 7, 2003.
 

Simulation of the Edge Plasma in Tokamaks

 
 
 
 

 
Articles / Dissertation
with Citations to

 Z. Abou-Assaleh

Theoretical Plasma Physics

 & Controlled Thermonuclear Fusion Energy

 

 

 

 

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