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Z. Abou-Assaleh, M. Petravic, R. Vesey, J.P. Matte, and T.W. Johnston. |
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"Non-Local Transport in a Tokamak Plasma Divertor with Recycling"
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Contribution to Plasma Physics, 34 (1994), 175-179. |
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http://www.osti.gov/energycitations/servlets/
purl/10189031-3l7sk4/native/10189031.pdf |
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http://worldcat.org/oclc/68212293?tab
=holdings |
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Z. Abou-Assaleh, J.P. Matte, T.W. Johnston and R. Marchand, |
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"Fokker-Planck Modelling of Edge Plasma Near the Neutralizer Plate in a
Tokamak"
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Contrib. Plasma Phys. 32 (1992) 3/4, 268-272. |
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S.L. Gulick, B.L. Stansfield, Z. Abou-Assaleh, C. Boucher, J.P.
Matte, T.W. Johnston and R. Marchand. |
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"Measurement of Pre-Sheath Flow Velocities by Laser-Induced Fluorescence"
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Journal of Nuclear Materials 176&177 (1990) 1059-1063. |
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R. Marchand,
Z. Abou-Assaleh and J.P. Matte. |
"Nonlocal Fluxes at a Plasma Sheath"
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Phys. Fluids B, Vol. 2, No. 6, 1247, June 1990. |
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Physics of Fluids B: Plasma Physics --
June 1990 -- Volume 2, Issue 6, pp. 1247-1251 |
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"Nonlocal fluxes at a plasma sheath"
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R. Marchand,
Z. Abou-Assaleh, and
J. P. Matte
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INRS-Energie, C. P. 1020, Varennes, Quebec, J3X 1S2, Canada
(Received 11 October 1989; accepted
1 March 1990)
The particle and energy
fluxes of electrons at the boundary of
a plasma in contact with a perfectly absorbing plate are
considered. In general, the fluxes are shown not to be determined
by the plasma temperature and density at the plate but rather by
a convolution of the plasma profiles in the vicinity of the
plate. A simple empirical expression is proposed for the nonlocal
fluxes, which approximately reproduces the results of a full
kinetic calculation. The implications of this, to divertor
plasmas near the neutralizer plate, are discussed. Physics of Fluids B:
Plasma Physics is copyrighted by The American Institute of Physics.
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Nonlocal fluxes at a plasma sheath |
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Nonlocal fluxes at a plasma sheath |
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Nonlocal fluxes at a plasma sheath |
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Nonlocal fluxes at a plasma sheath |
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Z. Abou-Assaleh, R. Marchand, J.P. Matte, T.W. Johnston and K.J.
Parbhakar. |
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"Kinetic Modelling of Plasma Near the Neutralizer Plate in a Tokamak
Divertor".
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Contrib. Plasma Phys. 30 (1990) 1, 37-43. |
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http://cat.inist.fr/?aModele=
afficheN&cpsidt=6885144 |
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J.H. Rogers, J.S. De Groot, Z. Abou-Assaleh, J.P. Matte, T.W.
Johnston and M.D. Rosen. |
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"Electron Heat Transport in a Steep Temperature Gradient" |
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Phys. Fluids B. Vol. 1, No. 4, 741, April 1989. |
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Physics of Fluids B: Plasma Physics -- April 1989 -- Volume 1, Issue 4, pp.
741-749 |
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"Electron heat transport in a steep
temperature gradient"
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J. H. Rogers and
J. S. De Groot
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Department of Applied Science, University of California Davis, Davis,
California 95616
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Z. Abou-Assaleh,
J. P. Matte, and
T. W. Johnston
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INRS-Energie, Université du Québec, Varennes, Québec J0L 2P0, Canada
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M. D. Rosen
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Lawrence Livermore National Laboratory, Livermore, California 94550
(Received 27 June 1988; accepted 7
December 1988)
Temporal and
spatial measurements of electron heat transport are made in the
University of California Davis AURORA device (J. H. Rogers, Ph.D.
dissertation, University of California, Davis, 1987). In AURORA, a
microwave pulse heats a region of underdense, collisional, plasma (n/ncr
 1,
where ncr =1.8×1010 cm–3 is the
critical density, Te0
![[approximately-equal-to]](http://scitation.aip.org/stockgif2/ape.gif) 0.15
eV, and the electron scattering mean free path
 ![[perpendicular]](http://scitation.aip.org/stockgif2/perp-script.gif)  2
cm). In this region, strong thermal heating (Tc
0.7
eV) as well as suprathermal heating (Th3
eV) is observed. The strong heating results in a steep
temperature gradient that violates the approximations of
classical heat diffusion theory (LT/3
for thermal electrons, where LT=Tc(![[partial-derivative]](http://scitation.aip.org/stockgif2/part.gif) Tc/z)–1
is the cold electron temperature scale length. The time evolution
of the electron temperature profile is measured using Langmuir
probes. The measured relaxation of the temperature gradient after
the microwave pulse is compared to calculations using the
Fokker–Planck International code [Phys. Rev. Lett. 49, 1936 (1982)]
and the multigroup, flux-limited, target design code lasnex [Comm. Plasma Phys. 2, 51 (1975)]. The electron distribution function at the end
of the microwave pulse is used as initial conditions for both
codes. The Fokker–Planck calculations are found to agree very
well with the measurements. However, the flux-limited diffusion calculations
do
not agree with the measurements for any value of the flux
limiter.
Physics of Fluids B: Plasma Physics
is copyrighted by The American Institute of Physics.
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Electron heat transport in a steep temperature gradient |
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Electron heat transport in a steep temperature gradient |
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Electronic Refereed Journal Article (HTML)
·
Full Refereed Journal Article (PDF)
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References in the article
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Citations to the Article (17) |
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http://cat.inist.fr/?aModele=afficheN&cpsidt
=7274089 |
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J.S. De Groot, J.H. Rogers, K. Mizuno, Z. Abou-Assaleh, J.P. Matte,
T.W. Johnston, W. Seka, P. Young and R.P. Drake. |
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"Microwave and Laser Measurements of the Ion Acoustic Decay
Instability and Electron Heat Transport"
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Laser Interaction, Vol. 8. Edited by Heinrich Hora and George H.
Miley (Plenum Publication Corporation, 1988). |
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