|Author||Trzcinska, A. ♦ Jastrze bski, J. ♦ Lubinski, P. ♦ Hartmann, F. J. ♦ Schmidt, R. ♦ von Egidy, T. ♦ Klos, B.|
|Source||United States Department of Energy Office of Scientific and Technical Information|
|Publisher||The American Physical Society|
|Subject Keyword||PHYSICS OF ELEMENTARY PARTICLES AND FIELDS ♦ NUCLEAR PHYSICS AND RADIATION PHYSICS ♦ ANNIHILATION ♦ ANTIPROTONS ♦ HADRONIC ATOMS ♦ NEUTRON DENSITY ♦ NEUTRONS ♦ NUCLEAR RADII ♦ NUCLEI ♦ PROTON DENSITY ♦ PROTONS ♦ RESIDUES ♦ SPECTROSCOPY ♦ TARGETS|
|Abstract||The differences between neutron and proton density distributions at large nuclear radii in stable nuclei were determined. Two experimental methods were applied: nuclear spectroscopy analysis of the antiproton annihilation residues one mass unit lighter than the target mass and the measurements of strong-interaction effects on antiprotonic x rays. Assuming the validity of two-parameter Fermi neutron and proton distributions at these large radii, the conclusions are that the two experiments are consistent with each other and that for neutron rich nuclei it is mostly the neutron diffuseness which increases and not the half-density radius. The obtained neutron and proton rms radii differences are in agreement with previous results.|
|Learning Resource Type||Article|
|Publisher Place||United States|
|Journal||Physical Review Letters|
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