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Measurement of spin-dependent total cross-section difference $Δσ_T$ in neutron-proton scattering at 16 MeV

J. Broz·J. Cerny·Z. Dolezal·G. M. Gurevich M. Jirasek·P. Kubik·A. A. Lukhanin·J. Svejda·I. Wilhelm·N. S. Borisov·Yu. M. Kazarinov B. A. Khachaturov·E. S. Kuzmin·V. N. Matafonov·A. B. Neganov·I. L. Pisarev·Yu. A. Plis·Yu. A. Usov·M. Rotter·B. Sedlak
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Abstract

A new measurement of $Δσ_T$ for polarized neutrons transmitted through a polarized proton target at 16.2 MeV has been made. A polarized neutron beam was obtained from the $^{3}\rm{H}(d,\vec n)^{4}\rm{He}$ reaction; proton polarization over 90\% was achieved in a frozen spin target of 20 cm$^3$ volume. The measurement yielded the value $Δσ_T=(-126\pm21\pm14)$ mb. The result of a simple phase shift analysis for the $^3S_1-^3D_1$ mixing parameter $ε_1$ is presented and compared with the theoretical potential model predictions.

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J. Broz, J. Cerny, Z. Dolezal, G. M. Gurevich M. Jirasek, P. Kubik, A. A. Lukhanin, J. Svejda, I. Wilhelm, N. S. Borisov, Yu. M. Kazarinov B. A. Khachaturov, E. S. Kuzmin, V. N. Matafonov, A. B. Neganov, I. L. Pisarev, Yu. A. Plis, Yu. A. Usov, M. Rotter, B. Sedlak. 1995-07-28. Measurement of spin-dependent total cross-section difference $Δσ_T$ in neutron-proton scattering at 16 MeV. https://doi.org/10.1007/s002180050062

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