diffusion constant


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diffusion constant

[də′fyü·zhən ‚kän·stənt]
(solid-state physics)
The diffusion current density in a hologeneous semiconductor divided by the charge carrier concentration gradient.
References in periodicals archive ?
2 Nonlinear QM as a fractal Brownian motion with a complex diffusion constant
D is a real-valued diffusion constant to be related to the Planck constant.
Having reviewed Nottale's work [1] we can generalize it by relaxing the assumption that the diffusion constant is real; we will be working with a complex-valued diffusion constant; i.
Therefore, the genuine NLSE cannot be obtained by a naive scaling (redefinition) of the o and the diffusion constant.
It is important to emphasize that the diffusion constant is always chosen to be related to Planck constant as follows: 2m||Dk||=||[?
Oxygen solubility, permeability, and diffusion constants for Clearcoat A and a standard OEM thermoset clearcoat are shown in Table 2.
Table 1 -- Stabilizers Present in Each Formulation Classification Stabilizer Formulation UVA HALS No additive Not present Not present UVA only Present Not present HALS only Not present Present Fully stabilized Present Present Table 2 -- Oxygen Solubility, Permeability, and Diffusion Constants for Clearcoat A and a Standard Thermoset Clearcoat.
From the linear logarithmic plot of reduced diffusion constant (D/[d.
Linear relations were found between the logarithmic reduced diffusion constant in PEANi and gas diameter; and between gas solubility coefficients and the boiling points of the gases, or their critical temperatures.
After 35 days, a series of shorter run times, less than 1 day, were conducted to test the sensitivity of the predictions of diffusion constants to cycle length.
5) justifies this assumption for the diffusion constants on the basis that at normal pressures only small amounts of the gas are taken up by the rubber.
Time and temperature dependences of kinetic and diffusion constants were calculated.
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