Showing papers by "John R. Cary published in 1990"
TL;DR: The diffusion coefficient for particles in a field of randomly phased waves was calculated numerically and a mapping-based model with a small number of random phases qualitatively reproduces the results of the simulations.
Abstract: The diffusion coefficient for particles in a field of randomly phased waves was calculated numerically. Spectra broad in wave number and broad in frequency exhibit identical behavior for the diffusion coefficient as a function of the overlap parameter \ensuremath{\varepsilon}. The diffusion coefficient exceeds the quasilinear value by a factor of about 2.5 at \ensuremath{\varepsilon} near 18. Differences greater than 25% between the two values exist far above the chaotic threshold (\ensuremath{\varepsilon}\ensuremath{\approxeq}60). A mapping-based model with a small number of random phases qualitatively reproduces the results of the simulations.
83 citations