No abstract available

No abstract available

[en] Within the dinuclear system model we analyse the production of yet unknown superheavy nuclei with Z > 118 and neutron-deficient isotopes of Pu in various complete fusion reactions. The yields of superheavies with Z > 118 are sensitive to the location of the next proton shell closure. The emission of neutron from the dinuclear systems is discussed. (author)

[en] The Ganil last results of exotic nuclei by observation of projectile fragments are presented. In the same time, the interest of these results for knowledge of nucleon-nucleon force is recalled. Performances of the magnetic line Lise very useful for identification of these nuclei are underlined

No abstract available

[en] Results of experiments in search of B-delayed fission (DF) of neutron-deficient (ND) nuclei within Hg-Pb range are given

[en] 4 nuclei of Nickel-48 have been produced in the GANIL accelerator. This nucleus is made up of 28 protons and 20 neutrons, it has at least 10 neutrons less than natural nickel but it is doubly magic: both protons and neutrons are distributed on full shells. It appears as if being doubly magic could compensate for the instability due to the shortage of neutrons. (A.C.)

[en] Individual abstracts were prepared for 27 of the papers in this volume. The remaining ten have already been cited in ERA; these papers can be located by reference to the entry CONF-790976-- in the report number index

No abstract available

[en] The two very neutron-deficient isotopes of lead A=190, 192 have been produced and studied through the reaction ¹⁵⁶Gd-¹⁵⁴Gd(⁴⁰Ar,4nγ)¹⁹²Pb-¹⁹⁰Pb. The identification of those nuclei was also studied by means of the two additional reactions: ¹⁸²W(¹⁶O,6nγ)¹⁹²Pb and ¹⁵⁶Gd(⁴⁰Ar,6nγ)¹⁹⁰Pb. The pulsed ⁴⁰Ar beam available at ALICE (Orsay) enabled to record single γ spectra as well as four dimensional (energy-time) spectra corresponding to the correlation of two Ge(Li) detectors for different time windows. Tentative level-schemes are proposed. No significant deviation from the behavior previously reported for the heavier isotopes (ref.1) is pointed out. The data are consistently reproduced within a 2 q.p formalism using an S.D.I. residual interaction. However a slow decrease of the 2₁⁺ level energy is observed which could be an indication of a weakly increasing collective trend when the number of neutron holes increases. Those experimental conclusions fairly agree with the theoretical predictions by F.Dickman and K.Dietrich (ref.2). As a matter of fact, the authors predict a spherical shape for the ground states and find a secondary prolate minimum of the deformation potential at low energy. But the latter is not well developped for A>184 suggesting a spherical behavior for the heavier isotopes