Pion Inelastic Scattering to the First Three Excited States of Lithium-6

摘要

Using the Energetic Pion Channel and Spectrometer system at the Clinton P. Anderseon Meson Physics FAcility, differential cross sections were measured for pi(+) inelastic scattering to the 3(+), T=0, 2.185-Mev, 0(+), T=1, 3.563-MeV, and 2(+), T=0, 4.25-MeV states of Li at incident pion energies of 120 and 180 MeV and laboratory scattering angles between 15 deg and 47 deg. Excitation functions ere measured at a constant momentum transfer of approximately 109 MeV/c for incident pion energies from 100 to 260 MeV. The constant momentum transfer corresponds to the maxima of the angular distributions for pi(+) inelastic scattering to the 3.563-MeV level. Microscopic calculations using the distorted-wave impulse approximation (DWIA) agree well with the measured angular distributions and excitations functions for the 2.185-and 4.25-MeV levels.