A short overview is given on the ststus of heavy ion reaction studies at energies in the vicinity of the Coulomb barrier. Two experiments, one involving simple and the other studying complex reactions, are discussed in more detail.
Some peculiar features of the nuclear fusion reaction of heavy ions around and far below the Coulomb barrier has demonstrated to be a good test bench for our understanding of nuclear reaction dynamics and its correlation with nuclear structure and the discription of the nuclear potential.
Highly excited nuclear systems can disintegrate sequentially or promptly. Both scenarios characterize very short decay times, usually smaller than \(10^{-20}\) sec. It seems that one can find a distinction between them, investigating charged particle correlations. Six different methods are discussed.
The new heavy-ion accelerator facilities provide new opportunities for a variety of nuclear studies. In the present contribution we want to focus on the investigation of direct reactions with exotic beams.
We discuss the process of electromagnetic interaction between heavy ions in peripheral collisions at large relative velocities. Emphasis is paid to excitations of single and multi-phonon giant resonances. Results on the double isovector giant dipole resonance obtained at SIS are summarized.
The D+D fusion reactions are among the oldest nuclear reactions studied. Due to their complex nature the reaction mechanism is still under intensive investigation. Polarization observables play an important role. Applications such as possible neutron-lean “polarized fusion” lead to new theoretical and experimental efforts to study these reactions at very low energies (e.g. 28 keV).
The systematics of the band crossing in the Kr isotopes was disscussed and compared with the predictions from cranked Wood–Saxon–Bogoliubov calculations. The alignment patterns of the positive parity bands in \(^{73}\)Se and \(^{75}\)Se are compared.
A. Atac, M. Piiparinen, B. Herskind, J. Nyberg, G. Sletten, G. de Angelis, S. Forbes, N. Gjørup, G. Hagemann, F. Ingebretsen, H. Jensen, D. Jerrestam, H. Kusakari, R. Lieder, G.M. Marti, S. Mullins, D. Santonocito, H. Schnare, K. Strähle, M. Sugawara, P.O. Tjøm, A. Virtaten, R. Wadsworth
M. Palacz, Z. Sujkowski, J. Bacelar, A. Atac, B. Herskind, J. Nyberg, M. Piiparinen, C. de Angelis, S. Forbes, N. Gjørup, G. Hagemann, F. Ingebretsen, H. Jensen, D. Jerrestam, H. Kusakari, R. Lieder, C.M. Marti, S. Mullins, D. Santonocito, H. Schnare, G. Sletten, K. Strahle, M. Sugawara, P.O. Tjøm, A. Virtanen, R. Wadsworth
We present the results of calculations showing that E0 transitions may successfully compete with other types of electromagnetic transitions in the decay out of SD bands.
J. Kownacki, D. Seweryniak, B. Cederwall, J. Nyberg, J. Blomqvist, C. Fahlander, A. Johnson, A. Kerek, L.-O. Norlin, E. Adamides, A. Atac, H. Grawe, E. Ideguchi, R. Julin, S. Juutinen, W. Karczmarczyk, S. Mitarai, M. Piiparinen, R. Schubart, G. Sletten, S. Törmänen, A. Virtanen
Quadrupole and octupole excitations in even \(^{94-100}\)Zr nuclei are studied within the fully microscopic generator coordinate method using a basis generated by the selfconsistent Hartree–Fock method. Results relevant for the \(A = 100\) shape transition and for the octupole mode properties are reported.
The method to the case of rotating nuclei, where the short-rabge attraction acting between the nucleons seems to play a significant role for the coupling scheme.
We have studied Gamow Teller strength and its distribution as a function of deformation in neutron-rich nuclei between strongly deformed Zr and nearly spherical Pd isotopes.
We present the phase-space selection techniques used for high energy \(\gamma \)-rays detection in experiments with the HECTOR array in the Niles Bohr Institute.
The measurements of angular distibutions of high energy gamma rays for the two systems \(^{110}\)Sn and \(^{165-167}\)Er formed in compound nucleus reactions at a variety of energies and of angular momenta is presented.
Calculations of sizes and shapes for the even-even isotopes with 38 \(\leq Z \leq 74\) and \(Z \leq N \leq 74\) i.e. for the Sr-W nuclei are presented.
Some initial results obtained from a study of \(^{208}\)Pb + \(^{64}\)Ni system using \(\gamma \)-\(\gamma \) coincidences supplemented with radioactivity measurements is discribed.
Role of the dimension of the deformation space admitted in the analysis of the spontaneous fission half-life is studied for the example of even–even heavy nucleus \(^{260}\)106. Importance of taking sufficiently large dimension is demonstrated.
