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Ions and the Landau critical velocity in He II.

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Ions and the Landau critical velocity in He II. / McClintock, Peter V. E.

In: Zeitschrift für Physik B Condensed Matter, Vol. 98, No. 3, 09.1995, p. 429-434.

Research output: Contribution to journalJournal articlepeer-review

Harvard

McClintock, PVE 1995, 'Ions and the Landau critical velocity in He II.', Zeitschrift für Physik B Condensed Matter, vol. 98, no. 3, pp. 429-434. https://doi.org/10.1007/BF01338419

APA

McClintock, P. V. E. (1995). Ions and the Landau critical velocity in He II. Zeitschrift für Physik B Condensed Matter, 98(3), 429-434. https://doi.org/10.1007/BF01338419

Vancouver

McClintock PVE. Ions and the Landau critical velocity in He II. Zeitschrift für Physik B Condensed Matter. 1995 Sep;98(3):429-434. https://doi.org/10.1007/BF01338419

Author

McClintock, Peter V. E. / Ions and the Landau critical velocity in He II. In: Zeitschrift für Physik B Condensed Matter. 1995 ; Vol. 98, No. 3. pp. 429-434.

Bibtex

@article{2f93bc883825474d899b6878ae81c280,
title = "Ions and the Landau critical velocity in He II.",
abstract = "Investigations of the motion of conventional negative ions (electron bubbles) in He II under pressures above 11 bar have provided the only means of measuring the Landau critical velocity for roton creation, VL, and for studying supercritical dissipation at higher velocities. Earlier work on roton creation is reviewed and it is pointed out that there is still no generally agreed explanation of the fact that the rotons seem to be emitted from the moving ion in pairs; nor is it known why the matrix element characterising the pair emission process should decrease rapidly with pressure. The possibility of studying these phenomena through use either of the {"}fast ion{"} (whose nature remains unknown), or of selected ions from the large variety of species that can be injected into He II by the recently developed technique of laser ablation, is discussed.",
author = "McClintock, {Peter V. E.}",
note = "Proceedings of the 128th WE-Heraeus Seminar on Ions and Atoms in Superfluid Helium, Heidelberg Germany, 16-19 May 1994",
year = "1995",
month = sep,
doi = "10.1007/BF01338419",
language = "English",
volume = "98",
pages = "429--434",
journal = "Zeitschrift f{\"u}r Physik B Condensed Matter",
issn = "0722-3277",
publisher = "Springer Verlag",
number = "3",

}

RIS

TY - JOUR

T1 - Ions and the Landau critical velocity in He II.

AU - McClintock, Peter V. E.

N1 - Proceedings of the 128th WE-Heraeus Seminar on Ions and Atoms in Superfluid Helium, Heidelberg Germany, 16-19 May 1994

PY - 1995/9

Y1 - 1995/9

N2 - Investigations of the motion of conventional negative ions (electron bubbles) in He II under pressures above 11 bar have provided the only means of measuring the Landau critical velocity for roton creation, VL, and for studying supercritical dissipation at higher velocities. Earlier work on roton creation is reviewed and it is pointed out that there is still no generally agreed explanation of the fact that the rotons seem to be emitted from the moving ion in pairs; nor is it known why the matrix element characterising the pair emission process should decrease rapidly with pressure. The possibility of studying these phenomena through use either of the "fast ion" (whose nature remains unknown), or of selected ions from the large variety of species that can be injected into He II by the recently developed technique of laser ablation, is discussed.

AB - Investigations of the motion of conventional negative ions (electron bubbles) in He II under pressures above 11 bar have provided the only means of measuring the Landau critical velocity for roton creation, VL, and for studying supercritical dissipation at higher velocities. Earlier work on roton creation is reviewed and it is pointed out that there is still no generally agreed explanation of the fact that the rotons seem to be emitted from the moving ion in pairs; nor is it known why the matrix element characterising the pair emission process should decrease rapidly with pressure. The possibility of studying these phenomena through use either of the "fast ion" (whose nature remains unknown), or of selected ions from the large variety of species that can be injected into He II by the recently developed technique of laser ablation, is discussed.

U2 - 10.1007/BF01338419

DO - 10.1007/BF01338419

M3 - Journal article

VL - 98

SP - 429

EP - 434

JO - Zeitschrift für Physik B Condensed Matter

JF - Zeitschrift für Physik B Condensed Matter

SN - 0722-3277

IS - 3

ER -