Possibility of choosing between different types of nucleon-nucleon interaction on the basis of data on hard bremsstrahlung in the process pp -> pp gamma at beam energies in the range 350-500 MeV

Previously reported results on the differential cross sections for the proc ess pp --> pp gamma occurring at beam-proton energies of 280, 350, and 450 MeV and involving the emission of hard photons are supplemented with the re sults of calculations at 400 and 500 MeV. The emerging pattern suggests tha t, in the energy range E-0 = 450-500 MeV, an experiment detecting hard phot ons from this reaction, in which case outgoing protons escape at small angl es on the different sides of the beam direction, will be very sensitive to the type of nucleon-nucleon potential (meson-exchange potentials versus the Moscow potential). The energy of Eo = 400 MeV is not optimal for this purp ose because the sensitivity is higher even at Eo = 350 MeV. The possibility of distinguishing between the types of nucleon-nucleon potentials through examining the transverse analyzing power A(y)(theta (gamma)), which reflect s the correctness of Laking into account spin effects, is studied. This ana lyzing power is found to exhibit comparatively small changes in response to introducing short-range oscillations in the S and P waves instead of the r epulsive-core-induced vanishing of the wave function at small distances. (C ) 2000 MAIK "Nauka/Interperiodica".