Spin echo small angle neutron scattering using a continuously pumped 3He neutron polarisation analyser

S. R. Parnell; A. L. Washington; K. Li; H. Yan; P. Stonaha; F. Li; T. Wang; A. Walsh; W. C. Chen; A. J. Parnell; J. P.A. Fairclough; D. V. Baxter; W. M. Snow; R. Pynn

doi:10.1063/1.4909544

Spin echo small angle neutron scattering using a continuously pumped ³He neutron polarisation analyser

S. R. Parnell, A. L. Washington, K. Li, H. Yan, P. Stonaha, F. Li, T. Wang, A. Walsh, W. C. Chen, A. J. Parnell, J. P.A. Fairclough, D. V. Baxter, W. M. Snow, R. Pynn

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

30 Scopus citations

Abstract

We present a new instrument for spin echo small angle neutron scattering (SESANS) developed at the Low Energy Neutron Source at Indiana University. A description of the various instrument components is given along with the performance of these components. At the heart of the instrument are a series of resistive coils to encode the neutron trajectory into the neutron polarisation. These are shown to work well over a broad range of neutron wavelengths. Neutron polarisation analysis is accomplished using a continuously operating neutron spin filter polarised by Rb spin-exchange optical pumping of ³He. We describe the performance of the analyser along with a study of the ³He polarisation stability and its implications for SESANS measurements. Scattering from silica Stöber particles is investigated and agrees with samples run on similar instruments.

Original language	English
Article number	023902
Journal	Review of Scientific Instruments
Volume	86
Issue number	2
DOIs	https://doi.org/10.1063/1.4909544
State	Published - Feb 1 2015
Externally published	Yes

Access to Document

10.1063/1.4909544

Cite this

Parnell, S. R., Washington, A. L., Li, K., Yan, H., Stonaha, P., Li, F., Wang, T., Walsh, A., Chen, W. C., Parnell, A. J., Fairclough, J. P. A., Baxter, D. V., Snow, W. M., & Pynn, R. (2015). Spin echo small angle neutron scattering using a continuously pumped ³He neutron polarisation analyser. Review of Scientific Instruments, 86(2), Article 023902. https://doi.org/10.1063/1.4909544

@article{fbeaadbfedbe483eae279b3bb9d944d1,

title = "Spin echo small angle neutron scattering using a continuously pumped 3He neutron polarisation analyser",

abstract = "We present a new instrument for spin echo small angle neutron scattering (SESANS) developed at the Low Energy Neutron Source at Indiana University. A description of the various instrument components is given along with the performance of these components. At the heart of the instrument are a series of resistive coils to encode the neutron trajectory into the neutron polarisation. These are shown to work well over a broad range of neutron wavelengths. Neutron polarisation analysis is accomplished using a continuously operating neutron spin filter polarised by Rb spin-exchange optical pumping of 3He. We describe the performance of the analyser along with a study of the 3He polarisation stability and its implications for SESANS measurements. Scattering from silica St{\"o}ber particles is investigated and agrees with samples run on similar instruments.",

author = "Parnell, \{S. R.\} and Washington, \{A. L.\} and K. Li and H. Yan and P. Stonaha and F. Li and T. Wang and A. Walsh and Chen, \{W. C.\} and Parnell, \{A. J.\} and Fairclough, \{J. P.A.\} and Baxter, \{D. V.\} and Snow, \{W. M.\} and R. Pynn",

note = "Publisher Copyright: {\textcopyright} 2015 AIP Publishing LLC.",

year = "2015",

month = feb,

day = "1",

doi = "10.1063/1.4909544",

language = "English",

volume = "86",

journal = "Review of Scientific Instruments",

issn = "0034-6748",

publisher = "American Institute of Physics",

number = "2",

}

TY - JOUR

T1 - Spin echo small angle neutron scattering using a continuously pumped 3He neutron polarisation analyser

AU - Parnell, S. R.

AU - Washington, A. L.

AU - Li, K.

AU - Yan, H.

AU - Stonaha, P.

AU - Li, F.

AU - Wang, T.

AU - Walsh, A.

AU - Chen, W. C.

AU - Parnell, A. J.

AU - Fairclough, J. P.A.

AU - Baxter, D. V.

AU - Snow, W. M.

AU - Pynn, R.

PY - 2015/2/1

Y1 - 2015/2/1

N2 - We present a new instrument for spin echo small angle neutron scattering (SESANS) developed at the Low Energy Neutron Source at Indiana University. A description of the various instrument components is given along with the performance of these components. At the heart of the instrument are a series of resistive coils to encode the neutron trajectory into the neutron polarisation. These are shown to work well over a broad range of neutron wavelengths. Neutron polarisation analysis is accomplished using a continuously operating neutron spin filter polarised by Rb spin-exchange optical pumping of 3He. We describe the performance of the analyser along with a study of the 3He polarisation stability and its implications for SESANS measurements. Scattering from silica Stöber particles is investigated and agrees with samples run on similar instruments.

AB - We present a new instrument for spin echo small angle neutron scattering (SESANS) developed at the Low Energy Neutron Source at Indiana University. A description of the various instrument components is given along with the performance of these components. At the heart of the instrument are a series of resistive coils to encode the neutron trajectory into the neutron polarisation. These are shown to work well over a broad range of neutron wavelengths. Neutron polarisation analysis is accomplished using a continuously operating neutron spin filter polarised by Rb spin-exchange optical pumping of 3He. We describe the performance of the analyser along with a study of the 3He polarisation stability and its implications for SESANS measurements. Scattering from silica Stöber particles is investigated and agrees with samples run on similar instruments.

UR - http://www.scopus.com/inward/record.url?scp=84923899678&partnerID=8YFLogxK

U2 - 10.1063/1.4909544

DO - 10.1063/1.4909544

M3 - Article

AN - SCOPUS:84923899678

SN - 0034-6748

VL - 86

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 2

M1 - 023902

ER -

Spin echo small angle neutron scattering using a continuously pumped ³He neutron polarisation analyser

Abstract

Access to Document

Other files and links

Fingerprint

Cite this