Negative Compressibility and Inverse Problem for Spinning Gas
Authors: Vasily Geyko and Nathaniel J. Fisch
Abstract:
A spinning ideal gas in a cylinder with a smooth surface is shown to have unusual properties. First,
under compression parallel to the axis of rotation, the spinning gas exhibits negative compressibility
because energy can be stored in the rotation. Second, the spinning breaks the symmetry under
which partial pressures of a mixture of gases simply add proportional to the constituent number
densities. Thus, remarkably, in a mixture of spinning gases, an inverse problem can be formulated
such that the gas constituents can be determined through external measurements only.
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Submitted to: Physical Review Letters (Deember 2012)
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Download PPPL-4842 (pdf 247 KB 5 pp)
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