Structure of noise generated on diffusion fronts

J.F. Gouyet, B. Sapoval, Y. Boughaleb and M. Rosso

Physica A: Statistical Mechanics and its Applications, 1989, vol. 157, issue 1, 620-624

Abstract: During a diffusion process the diffusion front fluctuates leading to a “geometrical noise”. We predict a 1/ƒ2 noise at high frequency and a 1/ƒ noise at low frequency separated by a crossover ƒ∗. We give here scaling expressions sustained by numerical calculations for the fluctuations and the distribution of events as a function of time and diffusion length. The close relation of this approach with noise in invasion experiments in presence of a gravity field is also pointed out.

Date: 1989
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:157:y:1989:i:1:p:620-624

DOI: 10.1016/0378-4371(89)90373-7

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