Electron and pion interactions with nuclei. Progress report, December 1, 1980-August 1, 1981

Work has continued on the analysis of high momentum transfer data on 3He, 4He, and Al from the SLAC experiments. The data collection on 48Ca isotope is completed at Bates. A high spin M8 transition has been identified along with some 50 other levels. Analyses of this data is proceeding using microscopic DWBA descriptions of the nucleus The quasi-free scattering from 40Ca and 48Ca is completed. The preliminary results confirm earlier measurements on 56Fe; the Coulomb sum rule is substantially reduced from independent particle models. The study of 88Sr and 89Y continues with particular emphasis on the extraction of the single particle distribution of the proton and its effect upon nuclear core polarization. Inelastic electron scattering from 1H, 2H, 3H, 3He and 4He has begun at the present Bates linac and measurements at higher energies (750 GeV) are approved for the recirculated beam. Development of high pressure gas targets for Bates and SLAC is continuing and the first versions have mantained beam currents of > 40 μA. The six papers included in the appendix of this report were abstracted and entered in the data base separately