High-pressure cell for neutron reflectometry of supercritical and subcritical fluids at solid interfaces

Justin R. Carmichael; Gernot Rother; James F. Browning; John F. Ankner; Jose L. Banuelos; Lawrence M. Anovitz; David J. Wesolowski; David R. Cole

doi:10.1063/1.3697999

High-pressure cell for neutron reflectometry of supercritical and subcritical fluids at solid interfaces

Justin R. Carmichael, Gernot Rother, James F. Browning, John F. Ankner, Jose L. Banuelos, Lawrence M. Anovitz, David J. Wesolowski, David R. Cole

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

7 Scopus citations

Abstract

A new high-pressure cell design for use in neutron reflectometry (NR) for pressures up to 50 MPa and a temperature range of 300-473 K is described. The cell design guides the neutron beam through the working crystal without passing through additional windows or the bulk fluid, which provides for a high neutron transmission, low scattering background, and low beam distortion. The o-ring seal is suitable for a wide range of subcritical and supercritical fluids and ensures high chemical and pressure stability. Wafers with a diameter of 5.08 cm (2 in.) and 5 mm or 10 mm thickness can be used with the cells, depending on the required pressure and momentum transfer range. The fluid volume in the sample cell is very small at about 0.1 ml, which minimizes scattering background and stored energy. The cell design and pressure setup for measurements with supercritical fluids are described. NR data are shown for siliconsilicon oxide and quartz wafers measured against air and subsequently within the high-pressure cell to demonstrate the neutron characteristics of the high-pressure cell. Neutron reflectivity data for supercritical CO ₂ in contact with quartz and SiSiO ₂ wafers are also shown.

Original language	English
Article number	045108
Journal	Review of Scientific Instruments
Volume	83
Issue number	4
DOIs	https://doi.org/10.1063/1.3697999
State	Published - Apr 2012

Funding

Research of G.R., L.M.A., and D.R.C. is based upon work supported as part of the Center of Nanoscale Control of Geologic CO (NCGC), an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Award Number ERKCC67. A portion of this research at Oak Ridge National Laboratory's Spallation Neutron Source was sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy. 2

Funders	Funder number
Scientific User Facilities Division
U.S. Department of Energy
Office of Science
Basic Energy Sciences	ERKCC67
Oak Ridge National Laboratory
National Center for GM Crops

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title = "High-pressure cell for neutron reflectometry of supercritical and subcritical fluids at solid interfaces",

abstract = "A new high-pressure cell design for use in neutron reflectometry (NR) for pressures up to 50 MPa and a temperature range of 300-473 K is described. The cell design guides the neutron beam through the working crystal without passing through additional windows or the bulk fluid, which provides for a high neutron transmission, low scattering background, and low beam distortion. The o-ring seal is suitable for a wide range of subcritical and supercritical fluids and ensures high chemical and pressure stability. Wafers with a diameter of 5.08 cm (2 in.) and 5 mm or 10 mm thickness can be used with the cells, depending on the required pressure and momentum transfer range. The fluid volume in the sample cell is very small at about 0.1 ml, which minimizes scattering background and stored energy. The cell design and pressure setup for measurements with supercritical fluids are described. NR data are shown for siliconsilicon oxide and quartz wafers measured against air and subsequently within the high-pressure cell to demonstrate the neutron characteristics of the high-pressure cell. Neutron reflectivity data for supercritical CO 2 in contact with quartz and SiSiO 2 wafers are also shown.",

author = "Carmichael, {Justin R.} and Gernot Rother and Browning, {James F.} and Ankner, {John F.} and Banuelos, {Jose L.} and Anovitz, {Lawrence M.} and Wesolowski, {David J.} and Cole, {David R.}",

year = "2012",

month = apr,

doi = "10.1063/1.3697999",

language = "English",

volume = "83",

journal = "Review of Scientific Instruments",

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publisher = "American Institute of Physics",

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T1 - High-pressure cell for neutron reflectometry of supercritical and subcritical fluids at solid interfaces

AU - Carmichael, Justin R.

AU - Rother, Gernot

AU - Browning, James F.

AU - Ankner, John F.

AU - Banuelos, Jose L.

AU - Anovitz, Lawrence M.

AU - Wesolowski, David J.

AU - Cole, David R.

PY - 2012/4

Y1 - 2012/4

N2 - A new high-pressure cell design for use in neutron reflectometry (NR) for pressures up to 50 MPa and a temperature range of 300-473 K is described. The cell design guides the neutron beam through the working crystal without passing through additional windows or the bulk fluid, which provides for a high neutron transmission, low scattering background, and low beam distortion. The o-ring seal is suitable for a wide range of subcritical and supercritical fluids and ensures high chemical and pressure stability. Wafers with a diameter of 5.08 cm (2 in.) and 5 mm or 10 mm thickness can be used with the cells, depending on the required pressure and momentum transfer range. The fluid volume in the sample cell is very small at about 0.1 ml, which minimizes scattering background and stored energy. The cell design and pressure setup for measurements with supercritical fluids are described. NR data are shown for siliconsilicon oxide and quartz wafers measured against air and subsequently within the high-pressure cell to demonstrate the neutron characteristics of the high-pressure cell. Neutron reflectivity data for supercritical CO 2 in contact with quartz and SiSiO 2 wafers are also shown.

AB - A new high-pressure cell design for use in neutron reflectometry (NR) for pressures up to 50 MPa and a temperature range of 300-473 K is described. The cell design guides the neutron beam through the working crystal without passing through additional windows or the bulk fluid, which provides for a high neutron transmission, low scattering background, and low beam distortion. The o-ring seal is suitable for a wide range of subcritical and supercritical fluids and ensures high chemical and pressure stability. Wafers with a diameter of 5.08 cm (2 in.) and 5 mm or 10 mm thickness can be used with the cells, depending on the required pressure and momentum transfer range. The fluid volume in the sample cell is very small at about 0.1 ml, which minimizes scattering background and stored energy. The cell design and pressure setup for measurements with supercritical fluids are described. NR data are shown for siliconsilicon oxide and quartz wafers measured against air and subsequently within the high-pressure cell to demonstrate the neutron characteristics of the high-pressure cell. Neutron reflectivity data for supercritical CO 2 in contact with quartz and SiSiO 2 wafers are also shown.

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DO - 10.1063/1.3697999

M3 - Review article

AN - SCOPUS:84860583989

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VL - 83

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 4

M1 - 045108

ER -

High-pressure cell for neutron reflectometry of supercritical and subcritical fluids at solid interfaces

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