SURFACE-PROPERTIES OF CS ISOTOPES

The neutron-skin property of Cs isotopes is studied by the deformed re lativistic mean-field and spherical nonrelativistic Hartree-Fock theor ies. We predict a sizable neutron-skin ratio for the isotopes not only near the neutron-drip line, but also far inside, where experimental s tudies could be done with the present-day experimental facilities. We also show that the surface diffuseness of the neutron distribution inc reases with the neutron number.