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The scattering of polarized neutrons from statically polarized solid 3He

Publication ,  Journal Article
Haase, DG; Keith, CD; Gould, CR; Huffman, PR; Roberson, NR; Seely, ML; Tornow, W; Wilburn, WS
Published in: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
January 11, 1998

We have constructed a 0.4 mole solid 3He target, cryogenically polarized at 12 mK in a field of 7 T. The 0.04 atoms/b target reached a polarization of 38% in 35 h. Such a target may be applied to any experiment which is tolerant of the large ambient magnetic field and which produces target heating of less than a microwatt. High energy neutron and photon scattering experiments meet these requirements. The target's figure of merit for neutron transmission measurement exceeds that of polarized gas targets by greater than 35. At the Triangle Universities Nuclear Laboratory we have used the target to measure the total cross section differences ΔσT and ΔσL, for incident polarized neutrons of energies 2-8 MeV. The cross section difference is sensitive to the excited state structure of the n-3He system. The results have been compared to a recent R-matrix analysis of A = 4 scattering and reaction data, and provide support for the 4He level scheme derived from that analysis.

Duke Scholars

Published In

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

DOI

ISSN

0168-9002

Publication Date

January 11, 1998

Volume

402

Issue

2-3

Start / End Page

341 / 346

Related Subject Headings

  • Nuclear & Particles Physics
  • 5106 Nuclear and plasma physics
  • 0299 Other Physical Sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
 

Citation

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Haase, D. G., Keith, C. D., Gould, C. R., Huffman, P. R., Roberson, N. R., Seely, M. L., … Wilburn, W. S. (1998). The scattering of polarized neutrons from statically polarized solid 3He. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 402(2–3), 341–346. https://doi.org/10.1016/S0168-9002(97)00860-7
Haase, D. G., C. D. Keith, C. R. Gould, P. R. Huffman, N. R. Roberson, M. L. Seely, W. Tornow, and W. S. Wilburn. “The scattering of polarized neutrons from statically polarized solid 3He.” Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 402, no. 2–3 (January 11, 1998): 341–46. https://doi.org/10.1016/S0168-9002(97)00860-7.
Haase DG, Keith CD, Gould CR, Huffman PR, Roberson NR, Seely ML, et al. The scattering of polarized neutrons from statically polarized solid 3He. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 1998 Jan 11;402(2–3):341–6.
Haase, D. G., et al. “The scattering of polarized neutrons from statically polarized solid 3He.” Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 402, no. 2–3, Jan. 1998, pp. 341–46. Scopus, doi:10.1016/S0168-9002(97)00860-7.
Haase DG, Keith CD, Gould CR, Huffman PR, Roberson NR, Seely ML, Tornow W, Wilburn WS. The scattering of polarized neutrons from statically polarized solid 3He. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 1998 Jan 11;402(2–3):341–346.
Journal cover image

Published In

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

DOI

ISSN

0168-9002

Publication Date

January 11, 1998

Volume

402

Issue

2-3

Start / End Page

341 / 346

Related Subject Headings

  • Nuclear & Particles Physics
  • 5106 Nuclear and plasma physics
  • 0299 Other Physical Sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences