A neutron polarimeter for the (p,n) reaction at Ep=50-80 MeV

H. Sakai, N. Matsuoka, T. Noro, T. Saito, A. Shimizu, M. Tosaki, M. Ieiri, K. Imai, A. Sakaguchi, Y. Takeuchi, T. Motobayashi

Research output: Contribution to journalArticle

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Abstract

A conventional type of neutron polarimeter consisting of three 12.5 × 12.5 cm cylindrical liquid scintillators and two 12.5 × 12.5 cm cylindrical plastic scintillators has been used to measure the transverse polarization transfer coefficient Kyy in the (p, n) reaction in the energy range 50 < Ep < 80 MeV. The effective analyzing powers of this polarimeter have been obtained empirically by observing neutrons from the 6Li(p, n)6Be reaction at θ = 0° and Ep = 50,65 and 80 MeV whose polarizations are deduced from the Kyy values of the 6Li(p,p′)6Be* (0+ reaction by utilizing the analogue relation. Observed effective analyzing powers are significantly reduced particularly at high energy, most likely due to the 12C(n,np)11B reaction process. The double scattering efficiencies are 6 × 10-4 and 3 × 10-4 with effective analyzing powers of 0.14 and 0.11 at En = 45 and 75 MeV, respectively.

Original languageEnglish
Pages (from-to)279-285
Number of pages7
JournalNuclear Inst. and Methods in Physics Research, A
Volume257
Issue number2
DOIs
Publication statusPublished - Jun 15 1987

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Polarimeters
polarimeters
Phosphors
Neutrons
Polarization
neutrons
scintillation counters
Scattering
Plastics
Liquids
polarization
plastics
analogs
energy
coefficients
liquids
scattering

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation

Cite this

Sakai, H., Matsuoka, N., Noro, T., Saito, T., Shimizu, A., Tosaki, M., ... Motobayashi, T. (1987). A neutron polarimeter for the (p,n) reaction at Ep=50-80 MeV. Nuclear Inst. and Methods in Physics Research, A, 257(2), 279-285. https://doi.org/10.1016/0168-9002(87)90745-5

A neutron polarimeter for the (p,n) reaction at Ep=50-80 MeV. / Sakai, H.; Matsuoka, N.; Noro, T.; Saito, T.; Shimizu, A.; Tosaki, M.; Ieiri, M.; Imai, K.; Sakaguchi, A.; Takeuchi, Y.; Motobayashi, T.

In: Nuclear Inst. and Methods in Physics Research, A, Vol. 257, No. 2, 15.06.1987, p. 279-285.

Research output: Contribution to journalArticle

Sakai, H, Matsuoka, N, Noro, T, Saito, T, Shimizu, A, Tosaki, M, Ieiri, M, Imai, K, Sakaguchi, A, Takeuchi, Y & Motobayashi, T 1987, 'A neutron polarimeter for the (p,n) reaction at Ep=50-80 MeV', Nuclear Inst. and Methods in Physics Research, A, vol. 257, no. 2, pp. 279-285. https://doi.org/10.1016/0168-9002(87)90745-5
Sakai, H. ; Matsuoka, N. ; Noro, T. ; Saito, T. ; Shimizu, A. ; Tosaki, M. ; Ieiri, M. ; Imai, K. ; Sakaguchi, A. ; Takeuchi, Y. ; Motobayashi, T. / A neutron polarimeter for the (p,n) reaction at Ep=50-80 MeV. In: Nuclear Inst. and Methods in Physics Research, A. 1987 ; Vol. 257, No. 2. pp. 279-285.
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AU - Tosaki, M.

AU - Ieiri, M.

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AB - A conventional type of neutron polarimeter consisting of three 12.5 × 12.5 cm cylindrical liquid scintillators and two 12.5 × 12.5 cm cylindrical plastic scintillators has been used to measure the transverse polarization transfer coefficient Kyy in the (p, n) reaction in the energy range 50 < Ep < 80 MeV. The effective analyzing powers of this polarimeter have been obtained empirically by observing neutrons from the 6Li(p, n)6Be reaction at θ = 0° and Ep = 50,65 and 80 MeV whose polarizations are deduced from the Kyy values of the 6Li(p,p′)6Be* (0+ reaction by utilizing the analogue relation. Observed effective analyzing powers are significantly reduced particularly at high energy, most likely due to the 12C(n,np)11B reaction process. The double scattering efficiencies are 6 × 10-4 and 3 × 10-4 with effective analyzing powers of 0.14 and 0.11 at En = 45 and 75 MeV, respectively.

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