Nuclear Halo and Its Related Reactions
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The experimental results of the proton halo nuclei <SUP>27</SUP>P, as well as probably <SUP>29</SUP>S, and the neutron halo in excited states of the nuclei <SUP>12</SUP>B and <SUP>13</SUP>C are presented. The probability of the valence nucleon (s) being out of the binding potential have been extracted systematically from the relevant experimental data, and a new condition for nuclear halo occurrence is proposed. Based on our systematical study, we put forward our scaling laws of nuclear halo in terms of the analytical expressions of the expectation value for the operator r<SUP>2</SUP> in a finite square-well potential. In order to investigate the breakup effects of the weakly bound projectiles on fusion reactions and barrier distributions, the complete fusion cross sections of <SUP>6</SUP>Li + <SUP>208</SUP>Pb and the elastic and quasi-elastic excitation functions of <SUP>6, 7</SUP>Li, <SUP>9</SUP>Be + <SUP>208</SUP>Pb were measured and compared with the predictions of the coupled-channels model. The dynamical effects on fusion of neutron-rich nuclei at the energies around the Coulomb barrier are discussed in terms of the comparison of the measured fusion data of <SUP>48</SUP>Ca + <SUP>90, 96</SUP>Zr with the calculations of the improved quantum molecular dynamics model and coupled-channels theory.
- Journal of Nuclear and Radiochemical Sciences
Journal of Nuclear and Radiochemical Sciences 7(1), R7-R12, 2006-06-01
The Japan Society of Nuclear and Radiochemical Sciences