Phys. Rev. Lett. 88, 174302 (2002) [4 pages]Sudden Collapse of a Granular ClusterReceived 6 July 2001; revised 26 November 2001; published 15 April 2002 Single clusters in a vibro-fluidized granular gas in N connected compartments become unstable at strong shaking. They are experimentally shown to collapse very abruptly. The observed cluster lifetime (as a function of the driving intensity) is analytically calculated within a flux model, making use of the self-similarity of the process. After collapse, the cluster diffuses out into the uniform distribution in a self-similar way, with an anomalous diffusion exponent 1/3. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.88.174302
DOI:
10.1103/PhysRevLett.88.174302
PACS:
45.70.-n, 02.60.Lj, 05.45.-a
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