title: Scaling and noise in slow combustion of paper
abstract: We present results of high resolution experiments on kinetic roughening of slow combustion fronts in paper, focusing on short length and time scales. Using three different grades of paper, we find that the combustion fronts show apparent spatial and temporal multiscaling at short scales. The scaling exponents decrease as a function of the order of the corresponding correlation functions. The noise affecting the fronts reveals short range temporal and spatial correlations, and non-Gaussian noise amplitudes. Our results imply that the overall behavior of slow combustion fronts cannot be explained by standard theories of kinetic roughening.
authors.affiliation: Department of Physics, University of Jyvaskyla, P.O. Box 35, FIN-40351 Jyvaskyla, Finland.
authors.initials: M
authors.lastname: Myllys
authors.initials: J
authors.lastname: Maunuksela
authors.initials: MJ
authors.lastname: Alava
authors.initials: T
authors.lastname: Ala-Nissila
authors.initials: J
authors.lastname: Timonen