06-187 Matthias Schroeter, Sibylle Naegle, Charles Radin and Harry Swinney
Phase transition in a static granular system (763K, postscript) Jun 19, 06
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Abstract. We have measured the force needed by a rod to penetrate a static column of grains for different well-defined particle volume fractions $\phi$. Measurements on our system reveal a phase transition at $\phi = 0.590 \pm 0.003$.

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