[en] 'Completely characterized' events in the ⁴⁰Ca + ⁴⁰Ca system at 35 MeV/u are compared to the predictions of several models including the QMD calculation which treats the entire reaction on a microscopic basis. Comparisons of various experimental observables; will be connected with results of several other experiments and conclusions will be drawn regarding the de-excitation mechanism of this system

[en] Inelastic scattering of ⁴⁰Ca on ⁴⁰Ca at 50 MeV/A has been measured at the GANIL facility in co (Sncidence with light charged particles. For the first time, the SPEG spectrometer was associated with 240 CsI(Tl) scintillators of the INDRA 4π array. The missing energy method, successfully used in previous experiments to study the nucleon decay of collective states is applied to the study of alpha-particle decay of the GQR. A significant direct decay branch by alpha-particles of the GQR in ⁴⁰Ca is measured for the first time

[en] The elastic angular distribution and excitation function of ⁴⁰Ca + ⁴⁰Ca at 163 MeV are reported. Weak resonances appear to be present in the data

[en] Results of (e,e'x) and (p,p'x) coincidence studies (with x=p,a) of the giant resonance excitation region in ⁴⁰Ca are discussed. 18 refs

[en] Elastic scattering between identical nuclei was investigated. The specific kinematical behavior of a symmetric system may enhance certain characteristics of the reaction, which in turn may be used to deduce parameters of the ion-ion interaction. The specific kinematic features discussed are the occurrence of only even partial waves, the coherent interference of scattering amplitudes originating from complementary scattering angles and consequently from different distances of closest approach, and the kinematic matching conditions for quasielastic transfer reactions in a symmetric system which are expected to influence the surface transparency of the optical potential. While the discussed experimental data seem to reveal sensitivity to these features the results are ambiguous

[en] The fusion of two double-closed shell nuclei open-quotes switches onclose quotes over an energy range which is around 2 MeV and is determined by the curvature of the Coulomb barrier. This quantum phenomenon is best displayed In the function d²(Eσ)/dE² which is sharply peaked at the barrier height and has just the above open-quotes tunneling widthclose quotes. This is beautifully seen in data for ⁴⁰Ca+⁴⁰Ca. If the target or projectile have strongly excited structure, this function is spread over a larger energy range--demonstrating the existence of a open-quotes distributionclose quotes of barriers. These distributions will be discussed in the context of recent accurate experimental data. Their remarkable qualitative differences give insights into nuclear shapes and surface oscillations as well as into the open-quotes neckingclose quotes arising from neutron-transfer channels

[en] In the present work, the role of isospin degree of freedom on the N/Z dependence of participant-spectator matter has been studied. The study is carried out within the framework on isospin-dependent quantum molecular dynamics model which is the extension of quantum molecular dynamics model. The IQMD model treats different charge states of nucleons, deltas, and pions explicitly, as inherited from the Vlasov-Uehling-Uhlenbeck (VUU) model

[en] Short communication. 4 refs., 2 figs

[en] The reduced absorption at lower α-particle energies (approximately 30 MeV) which is necessary to describe the anomalous large angle scattering of α-particles from ⁴⁰Ca nuclei is explained by the angular momentum mismatch between the entrance and exit reaction channels. A new definition of the volume integral of the imaginary potential is proposed. (Auth.)

[en] The transverse flow in the reaction of ⁴⁰Ca + ⁴⁰Ca at 35 MeV/nucleon has been determined for emitted isotopes with Z = 1 to 9. A significant modification of the Z-dependent flow pattern caused by the experimental filters, the detector thresholds and the angular resolutions (ΔØ) of the detector array, is observed. With the application of the appropriate experimental filters, the general trend of the experimental Z-dependent flow is well reproduced by the Constrained Molecular Dynamics (CoMD) simulation, employing an effective interaction corresponding to a soft EOS (K = 200 MeV). This fact suggests that to determine the flow values more precisely, a detection system with lower energy threshold and better angular resolution is urgently required. Additionally, together with the parallel work of Z. Kohley et al. [Phys Rev C, 2012, 85: 064605], the pattern of the experimental Z dependence of transverse flow is also discussed. The shoulder patterns of Z-dependent flow for 1 ≤ Z ≤ 6 can be attributed by the experimental filters, while the reduction of flow for Z ≥ 6 in our experiment can be caused by the suppression of collective motion under the momentum conservation. (authors)