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To explore the character of underlying transport in a sandpile, we have followed the motion of tracer particles. Moments of the distribution function of the particle positions, {l_angle}{vert_bar}x(t){minus}x(0){vert_bar}{sup n}{r_angle}=D{sub 0}t{sup n{nu}(n)}, are determined as a function of the elapsed time. The numerical results show that the transport mechanism for distances less than the sandpile length is superdiffusive with an exponent {nu}(n) close to 0.75, for n{lt}1. {copyright} {ital 1999} {ital The American Physical Society}
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| Authors: |
Carreras, B.A.;
Lynch, V.E.;
Newman, D.E. [Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-8070 (United States)];
Zaslavsky, G.M. [Courant Institute of Mathematical Sciences, New York University, New York, New York 10012 (United States)]|[Physics Department, New York University, New York, New York 10013 (United States)]
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| Publication Date: | 1999 Oct 01 |
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| OSTI Identifier: | 686878 |
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| Resource Type: | Journal Article |
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| Resource Relation: | Journal Name: Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics; Journal Volume: 60; Journal Issue: 4; Other Information: PBD: Oct 1999 |
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| Country of Publication: | United States |
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| Language: | English |
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| Format: | Size: pp. 4770-4778 |
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| Other Number(s): | Journal ID: PLEEE8; ISSN 1063-651X; TRN: 99:010288 |
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| Subject: | 66 PHYSICS; SAND; DIFFUSION; TRANSPORT THEORY; DISTRIBUTION FUNCTIONS; SCALING LAWS; PLASMA SIMULATION; TURBULENCE; NUMERICAL SOLUTION |
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| Update Date: | 2009 Dec 16 |
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