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http://repositoriodigital.ipn.mx/handle/123456789/11686
Título : | Generalized treatment for diffusion waves |
Palabras clave : | Diffusion dispersion equation |
Fecha de publicación : | 16-ene-2013 |
Editorial : | REVISTA MEXICANA DE FISICA |
Descripción : | Intended for teaching purposes, the phenomenon of diffusion in the presence of periodical sources is described, taking into account a
characteristic operator, ^ F(t), leading to a generalized hyperbolic equation. The essential features of the accompanying harmonic flux are
presented. For this purpose the solution to the problem is interpreted in terms of diffusion waves, a peculiar class of waves with complex
wave numbers whose generation, propagation and detection constitute the basis of modern analytical techniques able to measure optical and
transport properties of materials in the condensed or gaseous phase. A generalized mathematical equation describing this kind of waves
is shown and the existence of critical modulation frequencies, at which the diffusive fluxes change their behaviour, is demonstrated for
different physical phenomena involving diffusion waves. The dispersion equation for diffusion waves is given, and different particular cases
in modulation frequency “spectrum” are discussed Instituto politecnico Nacional CONACYT |
URI : | http://www.repositoriodigital.ipn.mx/handle/123456789/11686 |
Otros identificadores : | http://hdl.handle.net/123456789/1204 |
Aparece en las colecciones: | Doctorado |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
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RMF_Marin_2009_1.pdf | 38.95 kB | Adobe PDF | Visualizar/Abrir |
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