Anisotropy of the differential conductivity and of the transverse diffusion coefficient inn‐type silicon

1978 ◽  
Vol 33 (1) ◽  
pp. 89-91 ◽  
Author(s):  
D. Gasquet ◽  
J. P. Nougier
Keyword(s):  
Diffusion Coefficient ◽  
Differential Conductivity ◽  
Transverse Diffusion ◽  
Type Silicon

Ratio of Transverse Diffusion Coefficient to Mobility of Electrons in High-Pressure Xenon

2004 ◽  
Vol 43 (8A) ◽  
pp. 5568-5572 ◽  
Author(s):  
Shingo Kobayashi ◽  
Nobuyuki Hasebe ◽  
Tsutomu Igarashi ◽  
Takashi Miyachi ◽  
Mitsuhiro Miyajima ◽  
...  
Keyword(s):  
High Pressure ◽  
Diffusion Coefficient ◽  
Transverse Diffusion

Ambipolar Drift, Deformation, and Diffusion of a Plasma in a Magnetic Field

1973 ◽  
Vol 51 (5) ◽  
pp. 564-573 ◽  
Author(s):  
Richard L. Monroe
Keyword(s):  
Magnetic Field ◽  
Diffusion Coefficient ◽  
Effective Magnetic Field ◽  
Theoretical Problem ◽  
Direction Parallel ◽  
Transverse Diffusion ◽  
Weakly Ionized ◽  
Plasma Diffusion ◽  
Ambipolar Drift ◽  
And Diffusion

The theoretical problem of a weakly ionized, constant temperature, three particle plasma in an externally generated magnetic field is reformulated by transforming the set of 14 macroscopic plasma equations (continuity and momentum equations for ions and electrons plus Maxwell's equations) in 14 unknowns (ion and electron number densities and velocities plus the effective electric and magnetic fields) into an equivalent set of 4 integral equations in 4 unknowns. In the course of this transformation, it is shown that the plasma behavior can be interpreted in terms of three ambipolar processes : drift, deformation, and diffusion. Plasma diffusion is characterized by two diffusion coefficients : the usual Schottky formula applying in the direction parallel to the effective magnetic field and a new expression for the ambipolar transverse diffusion coefficient applying in directions perpendicular to the effective magnetic field. The new ambipolar coefficient differs markedly from the familiar ambipolar coefficient associated with the names of Bickerton, Lehnert, Holway, Allis, and Buchsbaum; and, in general, it gives values for the transverse diffusion coefficient which are two orders of magnitude larger than those given by the latter. It is concluded that ambipolar diffusion can produce a transverse diffusion coefficient large enough to account for the diffusion rates measured by Bohm, Burhop, Massey, and Williams in argon arc discharges.

Ratio of Transverse Diffusion Coefficient to Mobility of Electrons in High-Pressure Xenon and Xenon Doped with Hydrogen

2006 ◽  
Vol 45 (10A) ◽  
pp. 7894-7900 ◽  
Author(s):  
Shingo Kobayashi ◽  
Nobuyuki Hasebe ◽  
Takehiro Hosojima ◽  
Takeshi Ishizaki ◽  
Kazuhiro Iwamatsu ◽  
...  
Keyword(s):  
High Pressure ◽  
Diffusion Coefficient ◽  
Transverse Diffusion

The Application of Hydraulic Model in Water Environment Pollution Simulation

2014 ◽  
Vol 535 ◽  
pp. 436-439
Author(s):  
Lin Bo Zhang
Keyword(s):  
Diffusion Coefficient ◽  
Water Environment ◽  
Environmental Problems ◽  
Hydraulic Model ◽  
Environment Pollution ◽  
Transverse Diffusion

The paper introduces the application of hydraulic model in environmental problems, discusses several examples using hydraulic model in environmental problems and several important factors in the process of the use of hydraulic model to study the water environment pollution simulation, which involves abnormal model, the transverse diffusion coefficient, pollutant simulation and so on. The applicable conditions, constraints and their possible solutions of this technology are also discussed.

scholarly journals Computer Simulation of an Electron Swarm at low E/p in Helium

1974 ◽  
Vol 27 (1) ◽  
pp. 59 ◽  
Author(s):  
AI McIntosh
Keyword(s):  
Computer Simulation ◽  
Diffusion Coefficient ◽  
Cross Section ◽  
Electron Energy Distribution Function ◽  
Recent Theory ◽  
Electron Drift ◽  
Longitudinal Diffusion ◽  
Transverse Diffusion ◽  
And Diffusion ◽  
Momentum Transfer Cross Section

A computer simulated electron swarm at E/P293 = 1�0 V cm -1 tore 1 in a model gas has been used to examine the validity of a recent theory of electron drift and diffusion. The computed results are in agreement with well-established theories for the electron energy distribution function, drift velocity and transverse diffusion coefficient, and confirm that, for a constant momentum transfer cross section, the longitudinal diffusion coefficient is approximately half the transverse coefficient. However, significant differences have been found between the computed swarm and the predictions of the theory of Huxley (1972). In particular, over the time scale considered, the electron swarm is not symmetric about its centroid but is spatially anisotropic in such a way that it could appropriately be described as 'pear shaped'.

The Transverse Diffusion Coefficient in a Square Lattice

1972 ◽  
Vol 49 (4) ◽  
pp. 509-515 ◽  
Author(s):  
T. Auerbach ◽  
W. Hälg ◽  
J. Mennig
Keyword(s):  
Diffusion Coefficient ◽  
Square Lattice ◽  
Transverse Diffusion
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