No abstract

Non-charge-exchange inclusive cross sections have been measured at 500 MeV incident pion energy at quasifree scattering kinematics for both positive and negative pion charges. Peaks identified with quasifree knockout are seen at momentum transfers from 314 to 724 MeV/c. The widths and sizes of the peaks seen are consistent with the knockout of single nucleons from the nuclear surface. The data are consistent with no softening of the pion quasifree response at high momentum transfer, in contrast to the result seen in 500-MeV pion charge exchange data. PACS number(s): 25.80.Ls

Inelastic scattering of 162 MeV~and n. + was used to study the previously known J =8 stretched transitions in Ni. A consistent analysis of data from electron and pion scattering to stretched states using both harmonic oscillator and Woods-Saxon wave functions (unbound as necessary) was performed for Ni and three other nuclei: ' C, "Si, and ' Fe. The experimental pion scattering cross sections were reproduced by distorted-wave impulse approximation calculations using wave functions from (e, e ) with a normalization factor N that generally varied from 1 to 5. The ratio of the total isoscalar to the total isovector strength ranged from 0.2 to 1.2. The use of Woods-Saxon wave functions in the analysis did not significantly improve the fits to the angular distributions.