Production of "fast" and "exotic" negative ions in He II.

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Production of "fast" and "exotic" negative ions in He II. / Williams, Charles D. H.; Hendry, Philip C.; McClintock, Peter V. E.
In: Japanese Journal of Applied Physics, Vol. 26, No. Supple, 1987, p. 105-106.

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

Author

Williams, Charles D. H. ; Hendry, Philip C. ; McClintock, Peter V. E. / Production of "fast" and "exotic" negative ions in He II. In: Japanese Journal of Applied Physics. 1987 ; Vol. 26, No. Supple. pp. 105-106.

Bibtex

@article{6ace5f1d88e24961bf02741a1984a3ad,

title = "Production of {"}fast{"} and {"}exotic{"} negative ions in He II.",

abstract = "The {"}fast{"} negative ion provides, in principle, the basis for a determination of the Landau critical velocity for roton creation in Hell under its SVP; but precise measurements will require a more reliable ion source than those reported hitherto. It is known that a glow discharge above the liquid surface is necessary, but not sufficient, for the production of large fluxes of {"}fast{"} or {"}exotic{"} ions. Several new electrode geometries have been tested with He ll at 1.03K with variable results which are discussed. We report the new observation that the discharge must be white (rather than the more usual violet) for {"}fast{"} or {"}exotic{"} ions to be generated.",

author = "Williams, {Charles D. H.} and Hendry, {Philip C.} and McClintock, {Peter V. E.}",

note = "Proceedings of the 18th lnternational Conference on Low Temperature Physics, Kyoto, 1987",

year = "1987",

language = "English",

volume = "26",

pages = "105--106",

journal = "Japanese Journal of Applied Physics",

issn = "0021-4922",

publisher = "Institute of Physics Publishing",

number = "Supple",

}

RIS

TY - JOUR

T1 - Production of "fast" and "exotic" negative ions in He II.

AU - Williams, Charles D. H.

AU - Hendry, Philip C.

AU - McClintock, Peter V. E.

N1 - Proceedings of the 18th lnternational Conference on Low Temperature Physics, Kyoto, 1987

PY - 1987

Y1 - 1987

N2 - The "fast" negative ion provides, in principle, the basis for a determination of the Landau critical velocity for roton creation in Hell under its SVP; but precise measurements will require a more reliable ion source than those reported hitherto. It is known that a glow discharge above the liquid surface is necessary, but not sufficient, for the production of large fluxes of "fast" or "exotic" ions. Several new electrode geometries have been tested with He ll at 1.03K with variable results which are discussed. We report the new observation that the discharge must be white (rather than the more usual violet) for "fast" or "exotic" ions to be generated.

AB - The "fast" negative ion provides, in principle, the basis for a determination of the Landau critical velocity for roton creation in Hell under its SVP; but precise measurements will require a more reliable ion source than those reported hitherto. It is known that a glow discharge above the liquid surface is necessary, but not sufficient, for the production of large fluxes of "fast" or "exotic" ions. Several new electrode geometries have been tested with He ll at 1.03K with variable results which are discussed. We report the new observation that the discharge must be white (rather than the more usual violet) for "fast" or "exotic" ions to be generated.

M3 - Journal article

VL - 26

SP - 105

EP - 106

JO - Japanese Journal of Applied Physics

JF - Japanese Journal of Applied Physics

SN - 0021-4922

IS - Supple

ER -

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