[en] The dedicated medical purpose synchrotron, HIMAC, is described. The accelerator comprises ion sources, linacs, synchrotrons and beam transports. There are three rooms for beam irradiation treatment, and three experimental irradiation rooms. Clinical trial using 290 MeV/u carbon beam has begun at NIRS last June. Further utilization of the accelerator is also discussed. (author). 6 refs., 2 figs

[en] A presentation of the new electrostatic accelerator facility called the VIVITRON is given, following the starting period during which the first 16 experiments using EUROGAM have all been successfully completed. Special emphasize is put on new concepts used for the construction of the machine. The first preliminary results from EUROGAM experiments are shown together with the other equipment which will be used soon and which are mainly the outcome of European collaborations. The perspective for reaching 30 MV maximum voltage is discussed. (author). 7 refs., 10 figs

[en] Collective transverse momentum flow of nucleons and fragments in intermediate energy ⁴⁰Ar + ²⁷Al collisions is calculated with the Anti-symmetrized Molecular Dynamics (AMD). The observed flow and its balance energy are reproduced very well by the calculation with the Gogny force which corresponds to the soft EOS of the nuclear matter. The mechanism of the flow production of light fragments, and the dependence of the flow on the stochastic collision cross section and the effective interaction are discussed. (authors). 16 refs., 7 figs., 1 tab

[en] A method to create nuclear spin polarizations in unstable nuclides through high-energy heavy-ion collisions was introduced. Such polarizations are indispensable tool for the studies in which correlations between the polarization and out going radiations are detected. Of particular interests are to extract out clearly non nucleonic degrees of freedom from the studies of nuclear moments, and the coupling constants and time components of weak nuclear axial vector current. (author). 20 refs., 2 figs., 1 tab

[en] The advantages of heavy ion beams to excite giant resonances and multiphonon states are presented and discussed. Examples of new results on the excitation and decay of giant resonances and multiphonon states are given. The methods to sign the presence of multiphonon strength through its specific decay pattern are presented. (authors). 19 refs., 7 figs

[en] The copious production of intermediate mass fragments experimentally observed in heavy ion reactions may have various origins, the underlying mechanisms are discussed. If it exists, the multifragmentation of the nuclear system arising from the growth of density fluctuations would be a novel deexcitation mechanisms of nuclei besides the well-known fission and particle evaporation. The conditions of existence of the multifragmentation are discussed. (author). 10 refs., 3 figs

[en] Present status of phenomenological analyses of fission of highly excited nuclei is reviewed. The Langevin equation is employed for dynamical evolutions of the fissioning degree of freedom, coupled with particle evaporations. The first results obtained by three dimensional calculations are discussed. Physical quantities to be compared are pre-scission neutron multiplicities and kinetic energy distributions of fission fragments. The results support the one-body wall-and-window formula for friction tensor. (author). 23 refs., 4 figs., 2 tabs

[en] The RI Beam Factory is proposed at RIKEN which is the project to construct a superconducting ring cyclotron (SRC) and a double storage-cooler ring (MUSES). Radioactive beams of up to 500 A MeV for light nuclei and 150 A MeV for the heaviest nuclei are supplied as secondary beams. Electrons, stable nuclei, highly charged ions in addition to radioactive nuclei can be stored in the storage ring. The MUSES provides various method for the use of beams such as in colliding mode, in merging mode, and in internal target mode. A few of the new nuclear physics opportunities are presented. (author). 4 figs., 3 tabs

[en] It is shown that in many physical situations the spinodal decomposition of unstable systems can be correctly described by stochastic mean-field approaches. Such theories predict that the occurrence of spinodal instability, leading to the multifragmentation of an expended nuclear system, can be signed through the observation of time scales for the fragment formation of the order of 100 fm/c and of typical fragment size around A=20. It is pointed out that these fragments are formed at finite temperature and so can subsequently decay in flight. Possible experimental signals of such first order phase transitions are considered. (authors). 12 refs., 5 figs

[en] Some of the most recent experimental results on the Giant Dipole Resonance (GDR) in hot nuclei are presented. All data on the γ-decay of the GDR show a saturation of the apparent width and a saturation of the yield. However, it is not clear until now if these effects are related to a GDR width which either saturates or increases continuously with the excitation energy. Very recent data associated to selected exit channels could help to clarify the situation. (authors). 14 refs., 7 figs