Preface

The scientific contributions are classified into three sections: 1) Reaction Mechanism and Nuclear Structure, 2) Experimental Methods and Instrumentation, 3) Other Research. In the section 1 the information about an experimental setup for studing high energy gamma rays produced in heavy ion collisions is given. Other research described in this section is the study of the mechanism of fusion-fission reactions where complete set of data on precission neutron multiplicities was analysed. The very long fusion-fission time scale is reported that may suggest some unexpected properties of hot nuclear matter. Our permanent interest in gamma rays accompanying heavy ion reactions is represented by a contribution in which extremely energetic photons, above the kinematics limit set by the beam and Fermi motion velocities, has been observed. Reactions at higher energies are represented by two works, an experimental one in which η meson production cross section were measured and a theoretical one that deals with the properties of hot nuclear matter produced in 200 AGeV nucleus-nucleus collision. The nucler spectroscopy group reports some new information concerning shell structure of the spherical nuclei. The decay of the I = 8+ isomer in strongly neutron deficient 100,102Cd was studied and the results were analysed in the framework of a shell model. The wave functions for many excited states in 208Pb were derived from the large set of experimental data and interesting information about residual interactions was obtained. The electromagnetic properties of some deformed nuclei were investigated. The 125,127La nuclei were studied using RDM lifetime measurements and 129Xe and 156Gd - using Coulomb excitation. The superdeformed states were studied in 145Gd where the SD bands have been discovered. One of them shows two band crossing. In the second section a new experimental method for determination of gamma ray polarization is proposed and in the last one the results of experimental test of Bell's inequalities are presented