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VOLUME 39 (1984) | ISSUE 9 |
PAGE 423
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Layered structure of superfluid 4He with supercritical motion
Pitaevskii L. P.
It is shown that when superfluid 4He flows along a capillary with a velocity exceeding Landau's critical roton velocity, a one-dimensional periodic structure, which is at rest relative to the walls, appears in the helium and the spectrum of excitations is deformed so that the criterion of superfluidity is not violated.
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