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

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

1995-07-28

arxiv.org/abs/nucl-ex/9507002v1

Physics

Nuclear Physics

Nuclear Experiment

17 pages, 8 ps figures, available at http://www.troja.mff.cuni.cz/~dolezal/dstprep.html

Scientific paper

A new measurement of $\Delta\sigma_T$ 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 $\Delta\sigma_T=(-126\pm21\pm14)$ mb. The result of a simple phase shift analysis for the $^3S_1-^3D_1$ mixing parameter $\epsilon_1$ is presented and compared with the theoretical potential model predictions.

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