Fast Neutron Scattering Cross Sections of Sn-118 at 14.9 and 18.0 MeV

摘要: The neutron scattering cross sections of 118Sn have been measured at incident energies 14.9 and 18.0 MeV using the JAERI tandem fast time-of-flight spectrometer. Measured are angular distributions elastically scattered neutrons, inelastically neutrons to first 2+ state (Q= −1.23 MeV) 3− −2.32 MeV). inelastic were strongly forward peaked. Thus direct reaction process is dominant in this energy range. analyzed terms spherical optical model, distorted-wave Born approximation coupled-channel theory. potential deformation parameters deduced. obtained compared with other experimental results relation β p,p′ /β n,n′ >1 This ratio was found confirmed for quadrupole be consistent prediction schematic model treatment core-polari...