Neutron reflection from a liquid helium surface

T. R. Charlton; R. M. Dalgliesh; A. Ganshin; O. Kirichek; S. Langridge; P. V.E. McClintock

Neutron reflection from a liquid helium surface

T. R. Charlton, R. M. Dalgliesh, A. Ganshin, O. Kirichek, S. Langridge, P. V.E. McClintock

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

The reflection of neutrons from a helium surface has been observed for the first time. The ⁴He surface is smoother in the superfluid state at 1.54 K than in the case of the normal liquid at 2.3 K. In the superfluid state we also observe a surface layer ∼200 Å thick which has a subtly different neutron scattering cross-section, which may be explained by an enhanced Bose-Einstein condensate fraction close to the helium surface. The application of neutron reflectometry described in this paper creates new and exciting opportunities for the surface and interfacial study of quantum fluids.

Original language	English
Pages (from-to)	400-403
Number of pages	4
Journal	Fizika Nizkikh Temperatur (Kharkov)
Volume	34
Issue number	4-5
State	Published - Apr 2008
Externally published	Yes

Keywords

Bose-Einstein condensate
Liquid helium
Neutron reflection
Surface

Cite this

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title = "Neutron reflection from a liquid helium surface",

abstract = "The reflection of neutrons from a helium surface has been observed for the first time. The 4He surface is smoother in the superfluid state at 1.54 K than in the case of the normal liquid at 2.3 K. In the superfluid state we also observe a surface layer ∼200 {\AA} thick which has a subtly different neutron scattering cross-section, which may be explained by an enhanced Bose-Einstein condensate fraction close to the helium surface. The application of neutron reflectometry described in this paper creates new and exciting opportunities for the surface and interfacial study of quantum fluids.",

keywords = "Bose-Einstein condensate, Liquid helium, Neutron reflection, Surface",

author = "Charlton, {T. R.} and Dalgliesh, {R. M.} and A. Ganshin and O. Kirichek and S. Langridge and McClintock, {P. V.E.}",

year = "2008",

month = apr,

language = "English",

volume = "34",

pages = "400--403",

journal = "Fizika Nizkikh Temperatur (Kharkov)",

issn = "0132-6414",

number = "4-5",

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TY - JOUR

T1 - Neutron reflection from a liquid helium surface

AU - Charlton, T. R.

AU - Dalgliesh, R. M.

AU - Ganshin, A.

AU - Kirichek, O.

AU - Langridge, S.

AU - McClintock, P. V.E.

PY - 2008/4

Y1 - 2008/4

N2 - The reflection of neutrons from a helium surface has been observed for the first time. The 4He surface is smoother in the superfluid state at 1.54 K than in the case of the normal liquid at 2.3 K. In the superfluid state we also observe a surface layer ∼200 Å thick which has a subtly different neutron scattering cross-section, which may be explained by an enhanced Bose-Einstein condensate fraction close to the helium surface. The application of neutron reflectometry described in this paper creates new and exciting opportunities for the surface and interfacial study of quantum fluids.

AB - The reflection of neutrons from a helium surface has been observed for the first time. The 4He surface is smoother in the superfluid state at 1.54 K than in the case of the normal liquid at 2.3 K. In the superfluid state we also observe a surface layer ∼200 Å thick which has a subtly different neutron scattering cross-section, which may be explained by an enhanced Bose-Einstein condensate fraction close to the helium surface. The application of neutron reflectometry described in this paper creates new and exciting opportunities for the surface and interfacial study of quantum fluids.

KW - Bose-Einstein condensate

KW - Liquid helium

KW - Neutron reflection

KW - Surface

UR - http://www.scopus.com/inward/record.url?scp=41649120614&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:41649120614

SN - 0132-6414

VL - 34

SP - 400

EP - 403

JO - Fizika Nizkikh Temperatur (Kharkov)

JF - Fizika Nizkikh Temperatur (Kharkov)

IS - 4-5

ER -

Neutron reflection from a liquid helium surface

Abstract

Keywords

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