Composition of the nuclear periphery from antiproton absorption

Physics – Nuclear Physics – Nuclear Experiment

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Latex (RevTeX,aps style), 13 pages + 12 Postscript figures

Scientific paper

10.1103/PhysRevC.57.2962

Thirteen targets with mass numbers from 58 to 238 were irradiated with the antiproton beam from the Low Energy Antiproton Ring facility at CERN leading to the formation of antiprotonic atoms of these heavy elements. The antiproton capture at the end of an atomic cascade results in the production of more or less excited residual nuclei. The targets were selected with the criterion that both reaction products with one nucleon less than the proton and neutron number of the target be radioactive. The yield of these radioactive products after stopped-antiproton annihilation was determined using gamma-ray spectroscopy techniques. This yield is related to the proton and neutron density in the target nucleus at a radial distance corresponding to the antiproton annihilation site. The experimental data clearly indicate the existence of a neutron-rich nuclear periphery, a "neutron halo", strongly correlated with the target neutron separation energy Bn and observed for targets with Bn < 10 MeV. For two-target nuclei 106Cd and 144Sm, with larger neutron binding energies, a proton-rich nuclear periphery was observed. Most of the experimental data are in reasonable agreement with calculations based on current antiproton-nucleus and pion-nucleus interaction potentials and on nuclear densities deduced with the help of the Hartree-Fock-Bogoliubov approach. This approach was, however, unable to account for the 106Cd and 144Sm results.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Composition of the nuclear periphery from antiproton absorption does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Composition of the nuclear periphery from antiproton absorption, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composition of the nuclear periphery from antiproton absorption will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-230022

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.