Date of this Version
Physical Review Letters
Surface flows are excited by steadily adding spherical glass beads to the top of a heap. To simultaneously characterize the fast single-grain dynamics and the much slower collective intermittency of the flow, we extend photon-correlation spectroscopy via fourth-order temporal correlations in the scattered light intensity. We find that microscopic grain dynamics during an avalanche are similar to those in the continuous flow just above the transition. We also find that there is a minimum jamming time, even arbitrarily close to the transition.
© 2000 American Physical Society. You van view the original article at: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.85.4273
Lemieux, P. A., & Durian, D. J. (2000). From Avalanches to Fluid Flow: A Continuous Picture of Grain Dynamics Down a Heap. Physical Review Letters, 85 (20), 4273-4276. http://dx.doi.org/10.1103/PhysRevLett.85.4273
Date Posted: 13 October 2017
This document has been peer reviewed.