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Articles
/ Dissertation
with Citations
to Z. Abou-Assaleh |
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1994 |
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Implementation of Non-local Transport Model into 2D Fluid Code |
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A.S.Kukushkin , A.M.Runov |
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Kurchatov Institute. Kurchatov sir. 46. 123182.
Moscow. Russia |
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Contribution to Plasma Physics, 34
(1994) |
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". . .
The
main idea of the present paper is to produce a rather simple
and computationally efficient hybrid
approach, where the
two-dimensional fluid equations are
solved in order to find the
plasma parameters, and the parallel
heat flows appearing in these
equations are found from simplified
kinetic equations allowing one to
take into account the effects
related to the long-ranging hot
particles. This approach is similar
to the one proposed by Z.Abou-Assaleh
et al. (PET-3. Bad Honnef, 1992), but the usage
of the Krook collision operator,
which is much simpler
than the exact Fokker-Plank
operator, allows us to produce
an efficient code for
two-dimensional modelling of the edge plasma.
….." |
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1994 |
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J. M. Liu, J. S. De Groot, J. P. Matte and T. W. Johnston and R.
P. Drake |
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Phys. Plasmas 1 (11), November 1994 (3570) |
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"Electron
heat transport with non-Maxwellian distributions" |
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Physics of Plasmas -- November 1994 -- Volume 1, Issue 11, pp.
3570-3576 |
Electron heat transport with non-Maxwellian
distributions
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J. M. Liu
and
J. S. De Groot
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Plasma Research Group, Department of Applied Science,
University of California, Davis, California 95616
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J. P. Matte
and
T. W. Johnston
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INRS-Énergie et Matériaux, C.P. 1020, Varennes, Québec, J3X
1S2 Canada
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R. P. Drake
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Plasma Physics Research Institute, Lawrence Livermore National
Laboratory, L-418, P.O. Box 808, Livermore, California 94551
(Received 8 March 1994;
accepted 14 July 1994)
Measurements
are presented of electron heat transport with non-Maxwellian (flattopped)
distributions
due to inverse bremsstrahlung absorption of intense
microwaves in the University of California at Davis
Aurora II device [Rogers et al., Phys. Fluids B 1,
741 (1989)]. The plasma is created by pulsed
discharge in a cylindrical vacuum chamber with
surface magnets arranged to create a density gradient. The
ionization fraction (~1%) is high enough that charged
particle collisions are strongly dominant in the
afterglow plasma. A short microwave pulse (~2 µs)
heats a region of the afterglow plasma (ne/ncr 0.5)
creating a steep axial (LT~1–10 ei)
temperature gradient. Langmuir probes are used to
measure the relaxation of the heat front after the
microwave pulse. Time and space resolved measurements show that
the isotropic component of the electron velocity
distribution is flat topped (~exp[–(v/vm)m],
m 2)
in agreement with Fokker–Planck calculations using the
measured density profile. Classical heat transport theory
is not valid both because the isotropic component of
the electron velocity distribution is flattopped and
the temperature gradients are very steep. Physics of Plasmas is
copyrighted by The American Institute of Physics.
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Electron heat transport with non-Maxwellian
distributions |
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Electron heat transport with non-Maxwellian
distributions |
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1994 |
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Phys. Rev. Lett. 73, 2055–2058 (1994) |
Measurements of Radial Heat Wave
Propagation in Laser-Produced Exploding-Foil Plasmas
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D. S. Montgomery1,
O. L. Landen1,3, R. P. Drake2,3, K. G.
Estabrook1, H. A. Baldis1, S. H. Batha2,
K. S. Bradley3, and R. J. Procassini1
1Lawrence Livermore
National Laboratory, Livermore, California 94551
2Plasma Physics
Research Institute, University of California Davis and
Lawrence Livermore National Laboratory, Livermore, California
94551
3Department of
Applied Science, University of California Davis, Davis,
California 95616
Received 31 August 1992
Time-resolved, 2D
images of x-ray emission from thin, laser-irradiated titanium
foils are presented. The foils are irradiated with 0.35 µm light
at intensities of 1
x 1015 W/cm2 which produces a
plasma with electron densities <= 1022 cm-3
and electron temperature of 3-4 keV. X-ray emission that is
characteristic of the thermal heat front is observed to
propagate radially outward from the heated region. Comparison of
these measurements with 2D hydrodynamic simulations of the
experiment suggests the radial heat flux to be about 3% of the
free-streaming heat flux.
©1994 The American
Physical Society
URL: http://link.aps.org/abstract/PRL/v73/p2055
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Phys. Rev. Lett. 73, 2055 (1994)
Montgomery et al. - Measurements of Radial Heat... |
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Measurements of radial heat wave
propagation in laser-produced exploding-foil plasmas |
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1994 |
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Phys. Rev. A 50, 2691–2700 (1994) |
Electron distribution function in a
thin plasma layer and possible x-ray laser emission due to a
sharp temperature gradient
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Boris N. Chichkov,
Yoshiaki Kato, Hartmut Ruhl, and Sergey A. Uryupin
Theoretical Quantum
Electronics, Technical University Darmstadt, Hochschulstrasse
4A, Darmstadt, Germany
Institute of Laser Engineering,
Osaka University, 2-6 Yamada-oka, Suita, Osaka 565, Japan
P. N. Lebedev Physics
Institute, Leninsky prospect 53, Moscow, Russia
Received 8 February
1994
The temporal evolutions
of the electron distribution function and the electric field in
a dense, hot, multiply charged plasma due to the presence of a
sharp temperature gradient from one side (plasma–cold matter
contact) and a sharp density gradient from the other side
(plasma-vacuum boundary) are studied. The prospects for x-ray
lasing in such a plasma are discussed. The analogy with a p-n
junction semiconductor laser is emphasized.
©1994 The American
Physical Society
URL: http://link.aps.org/abstract/PRA/v50/p2691
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Phys. Rev. A 50, 2691 (1994)
Chichkov et al. - Electron distribution function in... |
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Electron distribution function in
a thin plasma layer and possible x-ray laser emission due to a
sharp temperature gradient |
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1994 |
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Phys. Rev. Lett. 72, 2717–2720 (1994) |
Measurements of inverse
bremsstrahlung absorption and non-Maxwellian electron velocity
distributions
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J. M. Liu, J. S.
De Groot, J. P. Matte, T. W. Johnston, and R. P. Drake
Plasma Research Group,
Department of Applied Science, University of California,
Davis, California 95616
Institut National de la
Recherche Scientifique Energie et Matériaux, C.P. 1020,
Varennes, Québec, Canada J3X 1S2
Plasma Physics Research
Institute, Lawrence Livermore National Laboratory, L-418,
P.O. Box 808, Livermore, California 94551
Received 15 December
1993
Non-Maxwellian (flattopped)
electron velocity distributions resulting from inverse
bremsstrahlung of intense microwaves are measured directly for
the first time in experiments performed on the UCD AURORA II
device. The experiments are performed in the afterglow of a
pulsed discharge plasma that is moderately collisional and
sufficiently ionized (~1%) that Coulomb collisions are
dominant. Langmuir probe measurements indicate that the
isotropic component of the electron velocity distribution is
non-Maxwellian in very good agreement with electron kinetic (Fokker-Planck)
simulations.
©1994 The American
Physical Society
URL: http://link.aps.org/abstract/PRL/v72/p2717
DOI: 10.1103/PhysRevLett.72.2717
PACS: 52.50.Gj, 52.25.-b, 52.50.Jm, 52.65.+z
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Phys. Rev. Lett. 72, 2717 (1994)
Liu et al. - Measurements of inverse bremsstrahlung... |
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Measurements of inverse
bremsstrahlung absorption and non-Maxwellian electron velocity
distributions |
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"Measurements
of inverse bremsstrahlung absorption and non-axwellian electron velocity
distributions" |
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Articles
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Dissertation |
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with Citations to |
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Z. Abou-Assaleh |
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Theoretical Plasma
Physics |
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&
Controlled Thermonuclear Fusion Energy |
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Dissertations |
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Books |
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Articles |
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