Proton scattering by short lived sulfur isotopes - art. no. 034615

Elastic and inelastic proton scattering has been measured in inverse kinema tics on the unstable nucleus S-40. A phenomenological distorted wave Born a pproximation analysis yields a quadrupole deformation parameter beta(2)=0.3 5+/-0.05 for the 2(1)(+) state. Consistent phenomenological and microscopic proton scattering analyses have been applied to all even-even sulfur isoto pes from A = 32 to A = 40. The second analysis used microscopic collective model densities and a modified Jeukenne-Lejeune-Mahaux nucleon-nucleon effe ctive interaction. This microscopic analysis suggests the presence of a neu tron skin in the heavy sulfur isotopes. The analysis is consistent with nor malization values for lambda(v), and lambda(w) of 0.95 for both the real an d imaginary parts of the Jeukenne-Lejeune-Mahaux potential. [S0556-2813(99) 04309-5].