Author/Authors :
A. Ozawa، نويسنده , , T. Baumann، نويسنده , , L. Chulkov، نويسنده , , D. Cortina Gil، نويسنده , , U. Datta Pramanik، نويسنده , , J. Fernandez، نويسنده , , H. Geissel، نويسنده , , F. Hammache، نويسنده , , K. Itahashi، نويسنده , , M. Ivanov، نويسنده , , R. Janik، نويسنده , , T. Kato، نويسنده , , K. Kimura، نويسنده , , T. Kobayashi، نويسنده , , K. Markenroth، نويسنده , , M. Meister، نويسنده , , S. Hofmann and G. Münzenberg، نويسنده , , T. Ohtsubo، نويسنده , , S. Ohya and M. Tanaka، نويسنده , , T. Okuda، نويسنده , , et al.، نويسنده ,
Abstract :
We have measured the interaction cross sections (σI) of 31–40Ar and 31–37Cl on carbon targets at energies of around 950 A MeV. The effective matter radii for these nuclei were deduced by a Glauber-model analysis. Combining our matter radii with measured charge radii for Ar isotopes, we could deduce the proton-skin thicknesses for the 32–40Ar isotopes, which were found to increase monotonically with decreasing neutron number. The larger radius of the proton drip-line nucleus 31Ar suggests an anomalous structure for this nucleus. In addition, using NaI(Tl) arrays surrounding the carbon target, we measured γ-rays emitted from excited states in these isotopes. In this way we could deduce the upper limits for the inelastic cross sections (σinela) on carbon targets at energies of around 950 A MeV.
Keywords :
C(31–40Ar , 31–40Ar) , 31–37Cl) , C(31–37Cl , Measured , E?950 MeV/nucleon , interaction ? , measured inelastic ? , 31–40Ar , 31–37Cl , deduced effective radii , Proton skins for 32–40Ar , Nuclear reactions
