Elastic. pi. /sup +/ and. pi. /sup -/ scattering on /sup 14/C at 164 MeV

Differential cross sections for ..pi../sup + -/ elastic scattering on /sup 14/C at a pion kinetic energy of 164 MeV were measured over the angular range 20/sup 0/--91/sup 0/. A contaminant analysis was performed for the target sample based on the kinematic separation of the elastic scattering peaks and the use of previously measured or calculated elastic cross sections. The data are compared to a newly developed, momentum-space, optical-potential calculation which shows clearly the importance of including Pauli suppression and three-body kinematics in the microscopic scattering description.