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Breaking the roton barrier: an experimental study of motion faster than the Landau critical velocity for roton creation in He II.

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Breaking the roton barrier: an experimental study of motion faster than the Landau critical velocity for roton creation in He II. / Phillips, A.; McClintock, Peter V. E.
In: Physical review letters, Vol. 33, No. 25, 16.12.1974, p. 1468-1471.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Phillips, A & McClintock, PVE 1974, 'Breaking the roton barrier: an experimental study of motion faster than the Landau critical velocity for roton creation in He II.', Physical review letters, vol. 33, no. 25, pp. 1468-1471. https://doi.org/10.1103/PhysRevLett.33.1468

APA

Phillips, A., & McClintock, P. V. E. (1974). Breaking the roton barrier: an experimental study of motion faster than the Landau critical velocity for roton creation in He II. Physical review letters, 33(25), 1468-1471. https://doi.org/10.1103/PhysRevLett.33.1468

Vancouver

Phillips A, McClintock PVE. Breaking the roton barrier: an experimental study of motion faster than the Landau critical velocity for roton creation in He II. Physical review letters. 1974 Dec 16;33(25):1468-1471. doi: 10.1103/PhysRevLett.33.1468

Author

Phillips, A. ; McClintock, Peter V. E. / Breaking the roton barrier : an experimental study of motion faster than the Landau critical velocity for roton creation in He II. In: Physical review letters. 1974 ; Vol. 33, No. 25. pp. 1468-1471.

Bibtex

@article{77a7387f51484b95b5fe5c3978eb7e7d,
title = "Breaking the roton barrier: an experimental study of motion faster than the Landau critical velocity for roton creation in He II.",
abstract = "We report the first observation of objects moving through He II with equilibrium drift velocities v beyond the Landau critical velocity vc,for roton creation. With T about 0.4 K, P = 25 bar, F =2 kV/cm, (v - vc) for negative ions is larger than a theoretical prediction by a factor of about 10^5. The vortex-ring nucleation rate is found to decrease with F above 300 V/cm, thus resolving apparent inconsistencies between earlier experiments.",
author = "A. Phillips and McClintock, {Peter V. E.}",
year = "1974",
month = dec,
day = "16",
doi = "10.1103/PhysRevLett.33.1468",
language = "English",
volume = "33",
pages = "1468--1471",
journal = "Physical review letters",
issn = "1079-7114",
publisher = "American Physical Society",
number = "25",

}

RIS

TY - JOUR

T1 - Breaking the roton barrier

T2 - an experimental study of motion faster than the Landau critical velocity for roton creation in He II.

AU - Phillips, A.

AU - McClintock, Peter V. E.

PY - 1974/12/16

Y1 - 1974/12/16

N2 - We report the first observation of objects moving through He II with equilibrium drift velocities v beyond the Landau critical velocity vc,for roton creation. With T about 0.4 K, P = 25 bar, F =2 kV/cm, (v - vc) for negative ions is larger than a theoretical prediction by a factor of about 10^5. The vortex-ring nucleation rate is found to decrease with F above 300 V/cm, thus resolving apparent inconsistencies between earlier experiments.

AB - We report the first observation of objects moving through He II with equilibrium drift velocities v beyond the Landau critical velocity vc,for roton creation. With T about 0.4 K, P = 25 bar, F =2 kV/cm, (v - vc) for negative ions is larger than a theoretical prediction by a factor of about 10^5. The vortex-ring nucleation rate is found to decrease with F above 300 V/cm, thus resolving apparent inconsistencies between earlier experiments.

U2 - 10.1103/PhysRevLett.33.1468

DO - 10.1103/PhysRevLett.33.1468

M3 - Journal article

VL - 33

SP - 1468

EP - 1471

JO - Physical review letters

JF - Physical review letters

SN - 1079-7114

IS - 25

ER -