Abstract
The -ray beam from the Cornell synchrotron was used to investigate the photoproduction of low-energy charged The effects of mesons from several nuclei at 35 to the beam direction. Maximum photon energies used were 800 Mev and 1 Bev. The yields of 40 and 80 Mev The effects of /sup +/ and 40 Mev The effects of mesons were observed with a detection system whose aperture was known absolutely. It was found that in some cases the meson yields were proportional to the atomic number, A, of the target rather than the more usual A/ sup 2/3. The data are compared with the predictions of an optical model of the nucleus. The deviations observed can be partially explained in terms of the inelastic scattering of high-energy mesons and of multiple meson production. An excitation function was measured for 80 Mev The effects of /sup +/ mesons from carbon by varying the machine energy; this indicated the presence of an appreciable number of multiply produced mesons. (auth)
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