ISSN:
1573-8205
Source:
Springer Online Journal Archives 1860-2000
Topics:
Energy, Environment Protection, Nuclear Power Engineering
,
Physics
Notes:
Conclusion The basic results may be formulated as follows: a simple three-parameter expression for the penetrating flux and a simple approximate formula for its calculation are obtained; the physical meaning of the parameters α, β, γ, which are a combination of all the initial parameters and uniquely determine the value of the penetrating flux, is analyzed. In particular, it is shown that the first parameter is a normalized (to the barrier thickness) depth, of the order of the depth of the deceleration zone of nonequilibrium bombarding particles, and the second parameter characterizes the concentration gradient at the inlet face; the dependence of the penetrating flux on the basic interaction parameters is analyzed; an original effect of diametrically opposite change in penetration with change in the same parameter in the same direction is detected; for example, it is shown that the penetrating flux may both increase and decrease with increase in diffusion coefficient; simple analytical criteria for superpenetration are obtained; it is shown that the facilitation of superpenetration conditions with decrease in the flux of nonequilibrium gas incident on the barrier is associated with quadratic boundary conditions; the laws of variation in the concentration profile with variation in irradiation conditions are analyzed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01129871
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