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BS>Multiple Meson Production in Nucleon-Antinucleon Annihilations: A two- parameter model is proposed for treating complicated production problems in a relatively simple way. It is assumed that the interaction may be characterized by a range of interaction and by a coupling strength. After the model is developed, it is applied to the problem of pion production in N-N-bar annihilations. The two parameters are fixed by the experimental data for the multiplicity and energy spectra. It is found that all the data can be satisfied if one chooses the radius of interaction to be one pion Compton wavelength. Under certain restrictions the model reduces to the Fermi model. Polarization Effects in Cascade Showers: Using cross sections for bremsstrahlung and pair production which are not summed over the polarizations, the amount of polarization transmitted through matter was calculated from an incident electron of 30 Mev by means of bremsstrahlung photons and the resulting pair productions. (auth)

MULTIPLE MESON PRODUCTION IN NUCLEON-ANTINUCLEON ANNIHILATIONS AND POLARIZATION EFFECTS IN CASCADE SHOWERS (thesis)