3He spin-filters

The ³He neutron absorption cross section is extremely spin dependent. The polarised gas acts as a neutron spin-filter (NSF) both for creating the polarisation of the incident beam and for analysing the polarisation after the sample.

Now available in sufficiently large quantities for several instruments to be supplied every day via the Tyrex central facility, ³He Neutron Spin Filters (NSF) Cells are becoming an attractive solution for neutron beam polarisation over large solid angles and for the whole range of neutron wavelengths.

The ³He Team

David Jullien - Nicolas Thiery - Pascal Mouveau - Alexander Petoukhov

April 2012: a new-generation filling station

3Helium spin filters provide an elegant means of polarising neutron beams. ³He gas has been polarised employing metastability-exchange optical pumping technique (MEOP) for more than a decade at ILL. Thus, since 2002, the MEOP filling station Tyrex has successfully produced more than 1000 litre bar of polarised ³He gas allowing numerous neutron experiments to be performed.
Based on this success, two new filling stations with similar performances have been developed and constructed at ILL. More compact, the new stations adopt a vertical design in order to maximise the lifetime of the electric piston compressor. Among many advances, a new release of the control software has been developed to ease the operation and improve further the reliability. We expect to reach 75% of ³He polarisation at a rate of at least 1bar-litre per hour.

In April 2012, the first station was successfully completed and installed at ISIS. Neutron tests on the performances of ³He spin filters produced by the new station have been carried out. Preliminary results are very promising and show that in the near future, the ISIS instruments can be provided with “in-house” high quality ³He spin filters every day!

The installation of the second machine is also on the right tracks: it has been sent by ship to Australia and it is expected to be installed at ANSTO by the end of September 2012.

The exceptional work of the ILL 3Helium team combined with the ILL recognised expertise in the field of polarised neutrons have made such a tremendous achievement possible. Many thanks to all people who have contributed to this success story that started several years ago with the construction of Tyrex!

P. Courtois, D. Jullien, S. Marty and P. Mouveau

³He Neutron spin filter

³He has a very large 1/v absorption cross-section and only absorbs neutrons in the opposite spin state to that of the 3He nucleus. The cross-section for scattering is very small and essentially isotropic. These two features make polarised ³He NSFs a very efficient and also a very “clean” technology for neutron beam polarisation. The filters are optically neutral in contrast to other polarisation methods, which invariably modify the angular and/or wavelength distribution and can also produce spurious effects, such as off-specular or small-angle scattering (supermirrors) or multiple or higher-order Bragg scattering (polarising crystals). The beam polarisation obtained with an NSF is perfectly homogeneous over the beam profile and there is no g-background created by the absorption of the neutrons in the NSF.

The level of gas polarisation is the critical parameter for the performance of the NSF. The Tyrex central filling station typically provides ³He gas at a polarisation of 75-80% on the neutron instrument. After being polarised on Tyrex, the ³He gas will inevitably start to depolarise with a characteristic depolarisation time T1. The main relaxation contributions typically arise from the material of the NSF cells and magnetic field gradients. Relaxation times at the moment are of the order of 100-300 hours, which means that the NSF gas is typically replaced on the instrument once every 1-2 days. The polarisation decays in a regular and predictable way, allowing for accurate data correction.

Gaseous ³He NSF provide very interesting properties :

simple transmission device of predictable characteristics
no impact on the optical functions
can be made in virtually any desired shape
homogeneous polarisation over the whole section of the beam
Broad-band enough for Time-Of-Flight instruments…

TYREX filling station

TYREX : Polarised ³He filling station

The “Tyrex” filling station for nuclear polarisation of ³He gas has been constructed at the ILL during 2000-2002. The Tyrex machine uses metastability-exchange optical pumping for polarising the ³He gas at about 1 mbar pressure. The gas is then compressed up to several bars via a hydraulic titanium-alloy piston compressor. The machine can provide about 1.3 bar.l/h of 75-80% polarised gas.

Laser

Infrared Yb-fiber laser (All-fiber V-Grove Tech.)
Optimised for Helium gas 2³S₁-2³P transition (1083 nm, 2 GHz bandwidth)
Power : 50W (five 10W units)

Compressor

Powerful hydraulic actuator under closed-loop computer control
Velocity: 30 cm/sec, final position within 3 µm precision
Polarisation Preserving Piston and Chamber: Titanium alloy, 11 cm diameter and 55 cm stroke
Total displacement: 5200 cm³, compression ratio: >15000

Performances

83% polarisation in static mode
77-80% on neutron beam
Production rate : 1.3 bar-litre / hour
Final pressure : up to 4 bar

Magnetic field

9 coils of 2 m diameter
Field amplitude: 10 Gauss
Homogeneity region: diameter 0.9 m, 2.5 m long
Relative field gradient : < 1.2 10^-4 cm^-1

Production

₃He cells

3He spin filter cells

Three types of spin-filter cells are currently in use at the ILL: reblown GE180 aluminosilicate glass, GE224 quartz glass and Pyrex glass with single-crystal Si-windows. The cells are coated inside with Caesium or Rubidium to improve the relaxation time. We routinely obtain wall relaxation times of the order of 200 hours for standard size cells (5 cm diameter, 10 cm length). For cells with a higher ratio of the volume to the surface (e.g. 14 cm diameter, 12 cm length) the wall relaxation time becomes even longer, sometimes exceeding 1000 hours, which is a world-record for a valve-sealed cell.

The material and shape of the NSF cell is adapted to the instrument. Glass cells can go to high pressure and/or cover large solid angles, while single-crystal silicon windows cells can be used to further minimise parasitic scattering.

Ge224 Quartz cells

High pressure or special shapes cells

Francis Tasset with the OSIRIS (ISIS) banana cell

Si windows cells

Ideal for reflectometry and small-angle scattering

Ge180 cells

Magneto-static cavities

Maintaining good polarisation of the spin-filter cell requires a very homogeneous magnetic field both during transport from Tyrex and on the neutron instrument itself. The ILL now provides a wide range of high-homogeneity magneto-static cavities, specialised in providing different degrees of transportability, cell volume and shielding from external fields.

Permanent magnet Magic boxes have been developed for the transportation of cell from the Tyrex filling station to the ILL neutron instruments.
Magnetic relaxation time is typically between 100h and 500h.

Transportation units

On beam Cavities

Magic box MB660. 3He AFP Flipper integrated

Flippers

We have developed flippers, based on adiabatic fast passage (AFP), which can flip the neutron spin or the ³He spin inside the spin-filter cell.

Neutron Flippers

Neutron flippers are attractive to use, as there is no material in the beam, they provide a very high flipping efficiency (>99%) and they cover the full range of neutron wavelengths from hot to ultra-cold neutrons.

³He Flippers

The ³He spin-filter with an AFP 3He flipper acts as a combined polariser and flipper. It works by reversing the polarisation direction of the ³He gas relative to the guide field and thus provides a neutron flipping efficiency of 100% by definition, which is completely independent of neutron wavelength. The main technical challenge consists in keeping the depolarisation of the ³He gas to a minimum when the flipping takes place. We are now able to flip the 3He gas inside a standard “magic box” with a loss of polarisation of about 10-5 per flip. If the flipper is activated once a minute, this depolarisation corresponds to an additional “relaxation time” of 1700 hours – negligible within the time frame of an experiment.

Publication

List of publications related to the development of ³He spin filters from ILL and partners.
Send email to djullien@ill.eu if you want to add some documents in the list.

Year 2015

Constraining short-range spin-dependent forces with polarized He3
M. Guigue, D. Jullien, A. K. Petukhov, and G. Pignol
Phys. Rev. D 92 (2015) 114001
Link: http://arxiv.org/pdf/1510.02606v1.pdf (pdf - 771 Ki)

Frequency shifts and relaxation rates for spin-1/2 particles moving in electromagnetic fields
G. Pignol, M. Guigue, A. Petukhov and R. Golub
Phys. Rev. A 92 (2015) 053407
Link: http://arxiv.org/pdf/1509.04655v2.pdf (pdf - 492 Ki)

Year 2014

3He spin filter based polarized neutron capability at the NIST Center for Neutron Research
W.C. Chen, T.R. Gentile, R. Erwin, S. Watson, Q. Ye, K.L. Krycka and B.B. Maranville
J. Phys.: Conf. Series 528 (2014) 012014
Link: http://iopscience.iop.org/article/10.1088/1742-6596/528/1/012014/pdf (pdf - 7.16 Mi)

On the limits of spin-exchange optical pumping of ³He
W. C. Chen, T. R. Gentile, Q. Ye, T. G. Walker and E. Babcock
J. Appl. Phys. 116 (2014) 014903
Link: http://scitation.aip.org/content/aip/journal/jap/116/1/10.1063/1.4886583

Universality of spin relaxation for spin-1/2 particles diffusing over magnetic-field inhomogeneities in the adiabatic regime
M. Guigue, G. Pignol, R. Golub, and A. K. Petukhov
Phys. Rev. A 90 (2014) 013407
Link: http://arxiv.org/abs/1403.5530
Neutron interferometric measurement of the scattering length difference between the triplet and singlet states of n-³He
M.G. Huber, M. Arif, W.C. Chen, T.R. Gentile, D.S. Hussey, T.C. Black, D.A. Pushin, C.B. Shahi, F.E. Wietfeldt and L. Yang
Phys. Rev. C 90 (2014) 064004
Link: http://journals.aps.org/prc/abstract/10.1103/PhysRevC.90.064004

Year 2013

Wide Angle Polarization Analysis with Neutron Spin Filters
Q. Ye, T.R. Gentile, J. Anderson, C. Broholm, W.C. Chen, Z. DeLand, R.W. Erwin, C.B. Fu, J. Fuller, A. Kirchhoff, J.A. Rodriguez-Rivera, V. Thampy, T.G. Walker and S. Watson
Physics Procedia 42 (2013) 206
Link: http://www.sciencedirect.com/science/article/pii/S1875389213002368

Size Independence of Statistics for Boundary Collisions of Random Walks and Its Implications for Spin-Polarized Gases
Dominique J. Bicout, Efim I. Kats, Alexander K. Petukhov, and Robert S. Whitney
Phys. Rev. Lett. 110 (2013) 010602
Link: http://arxiv.org/pdf/1112.4817v4.pdf (pdf - 1.04 Mi)

Comment on “Enhanced polarization and mechanisms in optically pumped hyperpolarized ³He in the presence of 4He”
T. R. Gentile, M. E. Hayden, P. J. Nacher, A. K. Petukhov, B. Saam and T. G. Walker”
Phys. Rev. A 88 (2013) 017401
Link: https://www.physics.wisc.edu/~tgwalker/112.hhchenComment.pdf (pdf - 76 Ki)

Determination of the Weak Axial Vector Coupling λ=gA/gV from a Measurement of the β-Asymmetry Parameter A in Neutron Beta Decay
D. Mund, B. Märkisch, M. Deissenroth, J. Krempel, M. Schumann, H. Abele, A. Petoukhov, and T. Soldner
Phys. Rev. Lett. 110 (2013) 172502
Link: http://arxiv.org/pdf/1204.0013.pdf (pdf - 245 Ki)

Ultra-Sensitive Depolarization Study of Polarizing CoTi Supermirrors With The Opaque Test Bench
C. Klauser, T. Bigault, N. Rebrova, T. Soldner
Physics Procedia 42 (2013) 99 –105
Link: http://www.sciencedirect.com/science/article/pii/S1875389213002204

Year 2012

Comment on “Pressure dependence of wall relaxation in polarized ³He gaseous cells”
B. Saam, A. K. Petukhov, J. Chastagnier, T. R. Gentile, R. Golub, and C. M. Swank
Phys. Rev. A 85 (2012) 047401
Link: http://www.physics.utah.edu/~hpgas/pubs/Saam_2012.pdf (pdf - 90 Ki)

In situ polarized ³He system for the Magnetism Reflectometer at the Spallation Neutron Source
X. Tong, C. Y. Jiang, V. Lauter, H. Ambaye, D. Brown, L. Crow, T. R. Gentile, R. Goyette, W. T. Lee, A. Parizzi, and J. L. Robertson
Rev. Sci. Instrum. 83 (2012) 075101
Link: http://scitation.aip.org/content/aip/journal/rsi/83/7/10.1063/1.4731261

High precision depolarisation measurements with an opaque test bench
C. Klauser, J. Chastagnier, D. Jullien, A. Petoukhov and T. Soldner
Journal of Physics Conference Series 340 01 (2012) 12011-12013(3)
Link: http://iopscience.iop.org/article/10.1088/1742-6596/340/1/012011/pdf (pdf - 575 Ki)

Year 2011

Effects of high intensity neutron flux on in-situ spin-exchange optical pumping of ³He
E Babcock, S Boag, C Beecham, T E Chupp, T R Gentile, G L Jones, A K Petukhov and T G Walker
Journal of Physics: Conference Series 294 (2011) 012011
Link: http://iopscience.iop.org/article/10.1088/1742-6596/294/1/012011/pdf (pdf - 513 Ki)

³He polarization for ISIS TS2 phase I instruments
C.J. Beecham, S. Boag, C.D. Frost, T.J. McKetterick, J.R. Stewart, K.H. Andersen, P.M. Bentley, D. Jullien
Physica B 406 (2011) 2429–2432
Link: http://www.sciencedirect.com/science/article/pii/S0921452610011191

Polarized ³He cell development and application at NIST
W C Chen, T R Gentile, C B Fu, S Watson, G L Jones, J W McIver, D R Rich
Journal of Physics: Conference Series 294 (2011) 012003
Link: http://iopscience.iop.org/article/10.1088/1742-6596/294/1/012003/pdf (pdf - 0.92 Mi)

A wide angle neutron spin filter system using polarized ³He
C.B. Fu, T.R. Gentile, G.L. Jones, W.C. Chen, R. Erwin, S. Watson, C. Broholm, J.A. Rodriguez-Rivera, J. Scherschligt
Physica B 406 (2011) 2419–2423
Link: http://www.sciencedirect.com/science/article/pii/S0921452610009348

Year 2010

Internal magnetic structure of magnetite nanoparticles at low temperature
K. L. Krycka, J. A. Borchers, R. A. Booth, C. R. Hogg, Y. Ijiri, W. C. Chen, S. M. Watson, M. Laver, T. R. Gentile, S. Harris, L. R.Dedon, J. J. Rhyne, and S. A. Majetich
Journal of Applied Physics 107 (2010) 09B525
Link: http://scitation.aip.org/content/aip/journal/jap/107/9/10.1063/1.3358049

In-situ Polarized ³He-Based Neutron Polarization Analyzer for SNS Magnetism Reflectometer
W-T Lee, X Tong, J Pierce, M Fleenor, A Ismaili, JL Robertson, WC Chen, TR Gentile, A Hailemariam, R Goyette, A Parizzi, VLauter, F Klose, H Kaiser, C Lavelle, D V Baxter, GL Jones, J Wexler, and L McCollum
Journal of Physics: Conference Series 256 (2010) 012086
Link: http://iopscience.iop.org/article/10.1088/1742-6596/251/1/012086/pdf (pdf - 523 Ki)

Polarized He3 as a Probe for Short-Range Spin-Dependent Interactions
A. K. Petukhov, G. Pignol, D. Jullien, and K. H. Andersen
Phys. Rev. Lett. 105 (2010) 170401
Link: http://arxiv.org/pdf/1009.3434v2.pdf (pdf - 138 Ki)

Powder diffraction with spin polarized neutrons
E. Lelièvre-Berna, A. S. Wills, E. Bourgeat-Lami, A. Dee, T. Hansen, P. F. Henry, A. Poole, M. Thomas, X. Tonon, J. Torregrossa, K. H. Andersen, F. Bordenave, D. Jullien, P. Mouveau, B. Guérard and G. Manzin
Measurement Science and Technology 21 (2010) 055106
Link: http://iopscience.iop.org/article/10.1088/0957-0233/21/5/055106/pdf

Year 2009

In-situ SEOP polarizer and initial tests on a high flux neutron beam
E. Babcock, S. Boag, K.H. Andersen, M. Becker, C. Beecham, F. Bordenave, J. Chastagnier, W.C. Chen, R. Chung, T.E. Chupp, S.Elmore, P. Fouilloux, T.R. Gentile, D. Jullien, E. Lelièvre-Berna, P. Mouveau, A. Petoukhov, M. Revert, T. Soldner
Physica B 404 (2009) 2655-2658
Link: http://www.sciencedirect.com/science/article/pii/S0921452609003986

In situ SEOP polarised 3He neutron spin filter for incident beam polarisation and polarisation analysis on neutron scattering instruments
S. Boag, E. Babcock, K.H. Andersen, M.Becker, T.R. Charlton, W.C. Chen, R.M. Dalgliesh, S.D. Elmore, C.D. Frost, T.R. Gentile,R. Lopez Anton, S.R. Parnell, A.K. Petoukhov, M.W.A. Skoda, T. Soldner
Physica B 404 (2009) 2659-2662
Link: http://www.sciencedirect.com/science/article/pii/S0921452609003998

Coupled magnetic and ferroelectric domains in multiferroic Ni3V2O8
I. Cabrera, M. Kenzelmann, G. Lawes, Y. Chen, W. C. Chen, R. Erwin, T. R. Gentile, J. B. Leao, J.W. Lynn, N. Rogado, R. J. Cava,and C. Broholm
Physical Review Letters 103 (2009) 087201
Link: http://arxiv.org/pdf/0904.2603.pdf (pdf - 293 Ki)

Applications of 3He neutron spin filters at the NCNR
W.C. Chen, R. Erwin, J.W. McIver, S. Watson, C.B. Fu, T.R. Gentile, J.A. Borchers, J.W. Lynn, G.L. Jones
Physica B 404 (2009) 2663-2666
Link: http://www.sciencedirect.com/science/article/pii/S0921452609004001

Precision measurement of the n-³He incoherent scattering length using neutron interferometry
M. G. Huber, M. Arif, T. C. Black, W. C. Chen, T. R. Gentile, D. S. Hussey, D. A. Pushin, F. E. Wietfeldt, and L. Yang
Physical Review Letters 102 (2009) 200401(4)
Link: http://arxiv.org/pdf/0809.2248v3.pdf (pdf - 493 Ki)

Resolving 3D magnetism in nanoparticles using polarization analyzed SANS
K.L. Krycka, R.Booth, J.A.Borchers, W.C. Chen, C.Conlon, T.R. Gentile, C. Hogg, Y. Ijiri, M. Laver, B.B. Maranville, S.A. Majetich,J.J. Rhyne, S.M.Watson
Physica B 404 (2009) 2561-2564
Link: http://www.sciencedirect.com/science/article/pii/S0921452609003743

Core-Shell Magnetic Morphology of Structurally Uniform Magnetite Nanoparticles
K. L. Krycka, R. A. Booth, C. R. Hogg, Y. Ijiri, J. A. Borchers, W. C. Chen, S. M. Watson, M. Laver, T. R. Gentile, L. R. Dedon, S.Harris, J. J. Rhyne, and S. A. Majetich
Physical Review Letters 104 (2009) 207203(4)
Link: http://repository.cmu.edu/cgi/viewcontent.cgi?article=1174&context=physics

End-compensated magnetostatic cavity for polarized ³He neutron spin filters
J. W. McIver, R. Erwin, W. C. Chen and T. R. Gentile
Review of Scientific Instruments 80 (2009) 063905-1/8
Link: http://scitation.aip.org/content/aip/journal/rsi/80/6/10.1063/1.3154386

Study of spin-exchange optically pumped ³He cells with high polarisation and long lifetimes
S.R. Parnell, E. Babcock, K. Nünighoff, M.W.A. Skoda, S. Boag, S. Masalovich, W.C. Chen, R. Georgii, J.M. Wild, C.D. Frost
Nuclear Instruments and Methods in Physics Research A 598 (2009) 774–778
Link: http://www.sciencedirect.com/science/article/pii/S0168900208014988

Polarized ³He spin-filters using MEOP for wide-angle polarization analysis
K. H. Andersen, D. Jullien, A. K. Petoukhov, P. Mouveau, F. Bordenave, F. Thomas, E. Babcock
Physica B 404, 17 (2009) 2652–2654
Link: http://www.sciencedirect.com/science/article/pii/S0921452609003974

Year 2008

SANS polarization analysis at V4 SANS instrument of HMI Berlin
U. Keiderling, A. Wiedenmann, A. Rupp, J. Klenke and W. Heil
Meas. Sci. Technol. 19 (2008) 034009
Link: http://iopscience.iop.org/article/10.1088/0957-0233/19/3/034009/pdf

Digital pulsed NMR spectrometer for nuclear spin-polarized 3He and other hyperpolarized gases
S.R. Parnell, E.B. Woolley, S. Boag and C. D Frost
Meas. Sci. Technol. 19 (2008) 045601
Link: http://iopscience.iop.org/article/10.1088/0957-0233/19/4/045601/pdf

Neutron beam effects on spin-exchange-polarized ³He
M. Sharma, E. Babcock, K.H. Andersen, L. Barrón-Palos, M. Becker, S. Boag, W.C. Chen, T.E. Chupp, A. Danagoulian, T.R.Gentile, A. Klein, S. Penttila, A. Petoukhov, T. Soldner, E.R. Tardiff, T.G. Walker, and W.S. Wilburn
Phys Rev Lett. 101 (2008) 083002
Link: http://arxiv.org/pdf/0802.3169.pdf (pdf - 188 Ki)

Year 2007

AFP flipper devices: Polarized ³He spin flipper and shorter wavelength neutron flipper
E. Babcock, A. Petoukhov, J. Chastagnier, D. Jullien, E. Lelièvre-Berna, K.H. Andersen, R. Georgii, S. Masalovich, S. Boag, C.D.Frost, and S.R. Parnell
Physica B 397 (2007) 172-175
Link: http://www.sciencedirect.com/science/article/pii/S0921452607001561

Mid-term report of the NMI3 neutron spin filter project
E. Lelièvre-Berna
Physica B 397 (2007) 162-167
Link: http://www.sciencedirect.com/science/article/pii/S0921452607001548

Demonstration of the use of polarised ³He as a broadband polariser on a pulsed time-of-flight neutron source
S. Boag, S.R. Parnell, C.D. Frost, K.H. Andersen, E. Babcock
Physica B 397 (2007) 179-181
Link: http://www.sciencedirect.com/science/article/pii/S0921452607001585

³He spin filters for a thermal neutron triple axis spectrometer
W.C. Chen, G. Armstrong, Y. Chen, B. Collett, R. Erwin, T.R. Gentile, G.L. Jones, J.W. Lynn, S. McKenney, J.E. Steinberg
Physica B 397 (2007) 168-171
Link: http://www.sciencedirect.com/science/article/pii/S092145260700155X

Spin-exchange optical pumping of ³He with Rb-K mixtures and pure K
W.C. Chen, T.R. Gentile, T.G. Walker, and E. Babcock
Physical Review A 75 (2007) 13416
Link: http://www.nist.gov/customcf/get_pdf.cfm?pub_id=841195

A large area polarized ³He neutron spin filter
T.E. Chupp, K.P. Coulter, M. Kandes, M. Sharma, T.B. Smith, G. Jones, W.C. Chen, T.R. Gentile, D.R. Rich, B. Lauss, M.T.Gericke, R.C. Gillis, S.A. Page, J.D. Bowman, S.I. Penttila, W.S. Wilburn, M. Dabaghyan, F.W. Hersman, M. Mason
Nuclear Instruments and Methods in Physics Research A 574 (2007) 500–509
Link: http://www.sciencedirect.com/science/article/pii/S0168900207004111

Broad bandpass spin polarizers for the ISIS second target station
R.M. Dalgliesh, A.A. van Well, S. Boag, T.R. Charlton, C.D. Frost, V.O. de Haan, S. Parnell, J. Plomp
Physica B 397 (2007) 176-178
Link: http://www.sciencedirect.com/science/article/pii/S0921452607001573

Polarized ³He spin filters for hot neutrons at the FRM-II
V. Hutanu, S. Masalovich, M. Meven, O. Lykhvar and G. Heger
Neutron News 18, 4 (2007) 14-16
Link: http://www.tandfonline.com/doi/pdf/10.1080/10448630701623111

Magnetization of 3He spin filter cells
V. Hutanu, A. Rupp, J. Klenke, W. Heil and J. Schmiedeskamp
Journal of Physics D: Applied Physics 40 (2007) 4405-4412
Link: http://iopscience.iop.org/article/10.1088/0022-3727/40/15/003/pdf

SQUID measurements of remanent magnetisation in refillable 3He spin-filter cells (SFC)
V. Hutanu, A. Rupp, and T. Sander-Thömmes
Physica B 397 (2007) 185-187
Link: http://www.sciencedirect.com/science/article/pii/S0921452607001603

Method to measure neutron beam polarization with 2x1 Neutron Spin Filter
S. Masalovich
Nuclear Instruments and Methods in Physics Research A 581 (2007) 791-798
Link: http://arxiv.org/ftp/arxiv/papers/0705/0705.2108.pdf

Measurements of the 3He spin relaxation below room temperature
Takashi Ino and Suguru Muto
Physica B 397 (2007) 182-184
Link: http://www.sciencedirect.com/science/article/pii/S0921452607001597

Year 2006

The ³He polarizing filter on the neutron reflectometer D17
K.H. Andersen, R. Cubitt, H. Humblot, D. Jullien, A. Petoukhov, F. Tasset, C. Schanzer, V.R. Shah, A.R. Wildes
Physica B 385-386 (2006) 1134
Link: http://www.sciencedirect.com/science/article/pii/S0921452606012816

Limits to the polarization for spin-exchange optical pumping of ³He
E. Babcock, B. Chann, T.G. Walker, W.C. Chen, T.R. gentile
Physics Review Letters 96 (2006) 083003
Link: http://www.physics.wisc.edu/~tgwalker/076.X-factor.pdf

Paramagnetic relaxation of spin polarized ³He at coated glass walls (part II)
A. Deninger, W. Heil, E.W. Otten, M. Wolf, R.K. Kremer, and A. Simon
The European Physical Journal D 38, 1 (2006) e2006-00051-1
Link: http://link.springer.com/article/10.1140%2Fepjd%2Fe2006-00051-1#page-1

PASTIS: an insert for polarization analysis studies on a thermal inelastic spectrometer
J.R. Stewart, K.H. Andersen, E. Babcock, C.D. Frost, A. Hiess, D. Jullien, J.A. Stride, J.-F. Barthélémy, F. Marchal, A.P. Murani, H.Mutka, H. Schober
Physica B 385-386 (2006) 1142
Link: http://www.sciencedirect.com/science/article/pii/S092145260601283X

Test of a continuously polarized ³He neutron spin filter with NMR-based polarization inversion on a single-crystal diffractometer
G.L. Jones, F. Dias, B. Collett, W.C. Chen, T.R. Gentile, P.M.B. Piccoli, M.E. Miller, A.J. Schultz, H. Yan, X. Tong, W.M. Snow, W.T.Lee, C. Hoffmann, J. Thomison
Physica B 385-386 (2006) 1131
Link: http://www.sciencedirect.com/science/article/pii/S0921452606012798

Update on polarised ³He
E. Lelièvre-Berna
Invited talk, ILL Millennium Symposium, (2006) Grenoble, France
Link:

³He spin filters/flippers and spherical neutron polarimetry applied to diffraction
E. Lelièvre-Berna
Invited talk, Polarised Neutron School, (HMI, 19-22 Sept. 2006) Berlin, Germany
Link:

Recent advances in polarised ³He spin-filters at the ILL
A. Petoukhov, K.H. Andersen, D. Jullien, E. Babcock, J. Chastagnier, R. Chung, H. Humblot, E. Lelièvre-Berna, F. Tasset, F. Radu,M. Wolff, H. Zabel
Physica B 385-386 (2006) 1146
Link: http://www.sciencedirect.com/science/article/pii/S0921452606012841

Compact magnetostatic cavity for polarised ³He neutron spin filter cells
A.K. Petoukhov, V. Guillard, K.H. Andersen, E. Bourgeat-Lami, R. Chung, H. Humblot, D. Jullien, E. Lelièvre-Berna, T. Soldner, F.Tasset and M. Thomas
Nuclear Instruments and Methods in Physics Research B 560 (2006) 480—484
Link: http://www.sciencedirect.com/science/article/pii/S0168900206000222

Relaxation of spin polarized ³He by magnetized ferromagnetic contaminants (part III)
J. Schmiedeskamp, H.-J. Elmers, W. Heil, E.W. Otten, Yu. Sobolev, W. Kilian, H. Rinneberg, T. Sander-Thommes, F. Seifert, and J.Zimmer
The European Physical Journal D 38, 1 (2006) e2006-00052-0
Link: https://www.ptb.de/cms/fileadmin/internet/fachabteilungen/abteilung_8/8.1_medizinische_messtechnik/8.11/reprint_ferro_relax.pdf

Relaxation of spin polarized ³He by magnetized ferromagnetic contaminants (part I)
J. Schmiedeskamp, W. Heil, E.W. Otten, R.K. Kremer, A. Simon, and J. Zimmer
The European Physical Journal D 38, 1 (2006) e2006-00050-2
Link: http://link.springer.com/article/10.1140%2Fepjd%2Fe2006-00052-0#/page-1

Year 2005

Pompage optique de l'hélium-3 à forte pression dans un champ magnétique de 1.5T
M. Abboud
PhD Thesis, Laboratoire Kastler-Brossel, Univ. Paris VI (2005)
Link: https://tel.archives-ouvertes.fr/tel-00011099/document

Metastability exchange optical pumping of helium-3 at high pressures and 1.5 T: Comparison of two optical pumping transitions
M. Abboud, A. Sinatra, G. Tastevin, P.-J. Nacher, and X. Maître
Laser Physics,15, 4 (2005) 475-479
Link: https://hal.archives-ouvertes.fr/hal-00005161/document

First results from Tyrex, the new polarised ³He filling station at ILL
K.A. Andersen, R. Chung, V. Guillard, H. Humblot, D. Jullien, E. Lelièvre-Berna, A. Petoukhov, and F. Tasset
Physica B, 356 (2005) 103-108
Link: http://www.sciencedirect.com/science/article/pii/S0921452604010762

Spin-exchange optical pumping with alkali-metal vapors
E.D. Babcock
PhD Thesis, University of Winsconsin-Madison (2005)
Link: http://www-atoms.physics.wisc.edu/papers/2005Babcock.pdf

Frequency-narrowed diode array bar
E. Babcock; B. Chann; I. Nelson and T.G. Walker
Applied Optics, 44 (2005) 3098-3104
Link: https://www.physics.wisc.edu/~tgwalker/070.BabcockLaser.pdf

Current activities and plans for polarized neutron instruments of the JSNS/J-PARC project
M. Furusaka
Physica B 356 (2005) 79-85
Link: http://www.sciencedirect.com/science/article/pii/S0921452604010695

Polarized ³He spin filters in neutron scattering
T.R. Gentile, E. Babcock, J.A. Borchers, W.C. Chen, D. Hussey, G.L. Jones, W.T. Lee, C.F. Majkzrak, K.V. O'Donovan, W.M. Snow,X. Tong, S.G.E. te Velthuis, T.G. Walker, and H. Yan
Physica B 356 (2005) 96-102
Link: http://www.sciencedirect.com/science/article/pii/S0921452604010750

Polarized ³He spin filters for slow neutron physics
T.R. Gentile, W.C. Chen, G.L. Jones, E. Babcock, and T.G. Walker
Journal of Research of the National Institute of Standards and Technology 110 (2005) 299-304
Link: https://www.ncnr.nist.gov/equipment/he3nsf/SEOP/nistSlowNeutronconf2005.pdf

Polarized ³He gas compression system using metastability-exchange optical pumping
D. S. Hussey, D. R. Rich, A. S. Belov, X. Tong, H. Yang, C. Bailey, C. D. Keith, J. Hartfield, G. D. R. Hall, T. C. Black, W. M. Snow,T. R. Gentile, W. C. Chen, G. L. Jones, and E. Wildman
Review of Scientific Instruments 76 (2005) 053503-1 - 053503-12
Link: http://scitation.aip.org/content/aip/journal/rsi/76/5/10.1063/1.1898163

Research on ³He spin filter cells made of quartz glass
V. Hutanu and A. Rupp
Physica B 356 (2005) 91-95
Link: http://www.sciencedirect.com/science/article/pii/S0921452604010749

Development of ³He polarised neutron spin filters at KEK
T. Ino, S. Muto, Y. Masuda, G. Kim and V.R. Skoy
Physica B 356 (2005) 109-113
Link: http://www.sciencedirect.com/science/article/pii/S0921452604010774

Continuously operating compact ³He-based neutron spin filter
G.L. Jones, J. Baker, W.C. Chen, B. Collett, J.A. Cowan, M.F. Dias, T.R. Gentile, C. Hoffmann, T. Koetzle, W.T. Lee, K. Littrell, M.Miller, A. Schultz, W.M. Snow, X. Tong, H. Yan, and A. Yue
Physica B 356 (2005) 86-90
Link: http://www.sciencedirect.com/science/article/pii/S0921452604010737

ILL polarised hot-neutron beam facility D3
E. Lelièvre-Berna, E. Bourgeat-Lami, Y. Gibert, N. Kernavanois, J. Locatelli, T. Mary, G. Pastrello, A. Petoukhov, S. Pujol, R. Rouques, F. Thomas, M. Thomas, and F. Tasset
Physica B 356 (2005) 141-145
Link: http://www.sciencedirect.com/science/article/pii/S0921452604010841

Metastable optical pumping of ³He for neutron spin filters at ISIS
S.R. Parnell, G.W. Wallidge, C.D. Frost, S. Langridge, R.S. Eccleston, and P. Phillips
Physica B 356 (2005) 114-117
Link: http://www.sciencedirect.com/science/article/pii/S0921452604010786

Towards polarization analysis on a thermal time-of-flight spectrometer
J.A. Stride, K.H. Andersen, A.P. Murani, H. Mutka, H. Schober, J.R. stewart
Physica B 356 (2005) 146-149
Link: http://www.sciencedirect.com/science/article/pii/S0921452604010853

Progress toward polarised ³He neutron spin filters using SEOP at ISIS
G.W. Wallidge, T.R. Charlton, R.M. Dalgliesh, S.R. Parnell, J.R. Schofield
Physica B 356 (2005) 118-120
Link: http://www.sciencedirect.com/science/article/pii/S0921452604010798

Polarised SANS for probing magnetic nanostructures
A. Wiedenmann
Physica B 356 (2005) 246-253
Link: http://www.sciencedirect.com/science/article/pii/S0921452604011044

Magnetisation distribution measurements from powders using a ³He spin filter: a test experiment
A.S. Wills, E. Lelièvre-Berna, F. tasset, J. Schweizer, and R. Ballou
Physica B 356 (2005) 254-258
Link: http://www.sciencedirect.com/science/article/pii/S0921452604011056