The analysing power Ay( theta ) for 12C(n,n) 12C elastic scattering and for inelastic scattering to the first excited state (Jpi=2+, Q=-4.44 MeV) of 12C was measured at 18.2 MeV. A pulsed polarised neutron beam was produced via the 2H(d,n)3He polarisation transfer reaction. The A y data, together with published cross sections, were analysed in the framework of the spherical optical model and in the coupled-channels formalism. A phase-shift analysis at 18.2 MeV gives supporting evidence for a broad 5/2+ resonance. The 12C recoil kerma factors and values for the n+12C reaction cross section were deduced and compared with previous estimates and predictions.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Physics and Astronomy(all)