Evolution of single-particle states beyond132Sn

Direct reaction probes of single-particle states and correlations

The most exotic neutron-proton asymmetric nuclei are produced most efficiently in high-energy fragmentation reactions. These exotic nuclei are produced as fast secondary beams with energies of order 100 MeV per nucleon or greater, and hence v/c > 0.3, often with relatively low intensities. For such beams one can exploit both the detection efficiency and the cross sections for fast oneand two-nu...

Evidence for core excitation in single - particle states of 19

We present an experimental study of Na states in the excitation energy range between 2 and 3 MeV. The presence of Na single-particle levels at these energies was first predicted by a microscopic cluster model and then experimentally confirmed by measuring the elastic and inelastic scattering of a 66 MeV Ne radioactive beam on a (CH2)n target. The H( Ne,p)Ne(g.s.) and H(Ne,p’)Ne*(2, 1.887 MeV) c...

One-neutron knockout from individual single-particle states of 11Be

The structure of the halo nucleus 11Be has been studied using the reaction 9Be(11Be,10Be+gamma)X at 60 MeV/nucleon. The ground state structure of 11Be is determined by comparing the experimental cross sections to a calculation combining spectroscopic factors from the shell model with l-dependent single-particle cross sections obtained in an eikonal model. This experiment shows the dominant 1s s...

Ja n 19 99 Many - particle nucleon - nucleon forces from nuclear single - particle states

As follows from the energies of single-particle states in 40Ca, 90Zr and 208Pb nuclei the contribution of many-particle NN forces to the nuclear single-particle potential is at least the sum of repulsive and attractive parts resulting from three-particle and four-particle forces respectively. In addition the specified nucleon density distributions in the above nuclei are determined from both th...

Dynamic Evolution of Droplet/Particle Size Distribution in Suspension Polymerization of Styrene