Neutron radiography of helium II

M. E. Hayden; G. Archibald; P. D. Barnes; W. T. Buttler; D. J. Clark; M. D. Cooper; M. Espy; G. L. Greene; R. Golub; S. K. Lamoreaux; C. Lei; L. J. Marek; J. C. Peng; S. Penttila

doi:10.1016/S0921-4526(02)01974-9

Neutron radiography of helium II

M. E. Hayden, G. Archibald, P. D. Barnes, W. T. Buttler, D. J. Clark, M. D. Cooper, M. Espy, G. L. Greene, R. Golub, S. K. Lamoreaux, C. Lei, L. J. Marek, J. C. Peng, S. Penttila

Physics

Research output: Contribution to journal › Conference article › peer-review

Abstract

We have used a neutron radiography technique to investigate the spatial distribution of ³He atoms in very dilute liquid ³He-⁴He mixtures at temperatures below the superfluid transition temperature. By imposing heat currents and monitoring the subsequent redistribution of ³He within the sample volume we obtain a direct measurement of the relevant mass diffusion coefficient. Data from these experiments provides a striking demonstration of the manner in which the distribution of impurity atoms within the liquid can be influenced by the presence of a free surface.

Original language	English (US)
Pages (from-to)	236-237
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	329-333
DOIs	https://doi.org/10.1016/S0921-4526(02)01974-9
State	Published - May 2003
Event	Proceedings of the 23rd international conference on low temper - Hiroshima, Japan Duration: Aug 20 2002 → Aug 27 2002

Keywords

Diffusion
He-He mixtures
Helium vapour compression (HEVAC) effect
Neutron radiography
Superfluidity

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Online availability

10.1016/S0921-4526(02)01974-9

Library availability

Discover UIUC Full Text

Cite this

@article{9f909cc20f574719ad68e4b5ad747182,

title = "Neutron radiography of helium II",

abstract = "We have used a neutron radiography technique to investigate the spatial distribution of 3He atoms in very dilute liquid 3He-4He mixtures at temperatures below the superfluid transition temperature. By imposing heat currents and monitoring the subsequent redistribution of 3He within the sample volume we obtain a direct measurement of the relevant mass diffusion coefficient. Data from these experiments provides a striking demonstration of the manner in which the distribution of impurity atoms within the liquid can be influenced by the presence of a free surface.",

keywords = "Diffusion, He-He mixtures, Helium vapour compression (HEVAC) effect, Neutron radiography, Superfluidity",

author = "Hayden, {M. E.} and G. Archibald and Barnes, {P. D.} and Buttler, {W. T.} and Clark, {D. J.} and Cooper, {M. D.} and M. Espy and Greene, {G. L.} and R. Golub and Lamoreaux, {S. K.} and C. Lei and Marek, {L. J.} and Peng, {J. C.} and S. Penttila",

note = "Funding Information: Funding for this work was provided by Los Alamos National Laboratory (LDRD-DR2001526) and NSERC (Canada).; Proceedings of the 23rd international conference on low temper ; Conference date: 20-08-2002 Through 27-08-2002",

year = "2003",

month = may,

doi = "10.1016/S0921-4526(02)01974-9",

language = "English (US)",

volume = "329-333",

pages = "236--237",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

}

TY - JOUR

T1 - Neutron radiography of helium II

AU - Hayden, M. E.

AU - Archibald, G.

AU - Barnes, P. D.

AU - Buttler, W. T.

AU - Clark, D. J.

AU - Cooper, M. D.

AU - Espy, M.

AU - Greene, G. L.

AU - Golub, R.

AU - Lamoreaux, S. K.

AU - Lei, C.

AU - Marek, L. J.

AU - Peng, J. C.

AU - Penttila, S.

N1 - Funding Information: Funding for this work was provided by Los Alamos National Laboratory (LDRD-DR2001526) and NSERC (Canada).

PY - 2003/5

Y1 - 2003/5

N2 - We have used a neutron radiography technique to investigate the spatial distribution of 3He atoms in very dilute liquid 3He-4He mixtures at temperatures below the superfluid transition temperature. By imposing heat currents and monitoring the subsequent redistribution of 3He within the sample volume we obtain a direct measurement of the relevant mass diffusion coefficient. Data from these experiments provides a striking demonstration of the manner in which the distribution of impurity atoms within the liquid can be influenced by the presence of a free surface.

AB - We have used a neutron radiography technique to investigate the spatial distribution of 3He atoms in very dilute liquid 3He-4He mixtures at temperatures below the superfluid transition temperature. By imposing heat currents and monitoring the subsequent redistribution of 3He within the sample volume we obtain a direct measurement of the relevant mass diffusion coefficient. Data from these experiments provides a striking demonstration of the manner in which the distribution of impurity atoms within the liquid can be influenced by the presence of a free surface.

KW - Diffusion

KW - He-He mixtures

KW - Helium vapour compression (HEVAC) effect

KW - Neutron radiography

KW - Superfluidity

UR - http://www.scopus.com/inward/record.url?scp=0037906282&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037906282&partnerID=8YFLogxK

U2 - 10.1016/S0921-4526(02)01974-9

DO - 10.1016/S0921-4526(02)01974-9

M3 - Conference article

AN - SCOPUS:0037906282

SN - 0921-4526

VL - 329-333

SP - 236

EP - 237

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

T2 - Proceedings of the 23rd international conference on low temper

Y2 - 20 August 2002 through 27 August 2002

ER -

Neutron radiography of helium II

Abstract

Keywords

ASJC Scopus subject areas

Online availability

Library availability

Related links

Fingerprint

Cite this