TY - JOUR
T1 - A neutron polarimeter for the (p,n) reaction at Ep=50-80 MeV
AU - Sakai, H.
AU - Matsuoka, N.
AU - Noro, T.
AU - Saito, T.
AU - Shimizu, A.
AU - Tosaki, M.
AU - Ieiri, M.
AU - Imai, K.
AU - Sakaguchi, A.
AU - Takeuchi, Y.
AU - Motobayashi, T.
N1 - Funding Information:
This work was supported in part by the Grant-in-Aid for Scientific Research No. 58540156 of the Japan Ministry of Education, Science and Culture. This experiment was performed at the Research Center for Nuclear Physics, Osaka University under Program Numbers 16A03, 19A06 and 21AIL
PY - 1987/6/15
Y1 - 1987/6/15
N2 - 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.
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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U2 - 10.1016/0168-9002(87)90745-5
DO - 10.1016/0168-9002(87)90745-5
M3 - Article
AN - SCOPUS:0023366784
SN - 0168-9002
VL - 257
SP - 279
EP - 285
JO - Nuclear Inst. and Methods in Physics Research, A
JF - Nuclear Inst. and Methods in Physics Research, A
IS - 2
ER -