Measurements of interaction cross sections for 22–35Na isotopes
2014
Interaction cross sections ( I) for 22 35 Na isotopes from the stability line to the vicinity of the neutron drip line have been measured at around 240 MeV/ nucleon. The I for 33 35 Na were measured for the first time. Enhancement in cross sections is clearly observed from the systematics for stable nuclei, for isotopes with large mass numbers. From the known values of the nuclear-deformation parameters 2 of 22 31 Na, these en- hancement can be mainly ascribed to the nuclear deformation. Large enhancement in heavier isotopes suggest that these nuclei are strongly deformed. The root-mean-square (RMS) nuclear matter radii were deduced from the I by using Glauber-type calculation. Furthermore, a monotonic growth of the neutron-skin thickness has been deduced with increasing neutron number for Na isotopes.
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