Skin values and matter radii of 208Pb and 58,60,64Ni based on reaction cross section of 3,4He scattering

The PREX group reported a new skin value, rskin208(PREX2)=0.283±0.071=0.212∼0.354fm. Using the chiral (Kyushu) g-matrix folding model with proton and neutron densities determined D1S+GHFB+AMP, we thickness rskin208(exp)=0.278±0.035 fm from reaction cross sections σR(exp) of p+208Pb scattering, where D1S-GHFB+AMP denotes Gogny-D1S HFB angular momentum projection (AMP). method also yielded rskin208(exp)=0.416±0.146 4He+208Pb scattering. In our previous work, accumulated 206 EoSs sloop parameter L=76∼165MeV EoSs. value L yields rskin208=0.102∼0.354fm. As for 58Ni, novel measuring nuclear reactions in inverse kinematics stored ion beams was successfully used to extract matter radii rm 58Ni at GSI facility. first aim, determine rskin208(exp) 3He scattering on 208Pb target take weighted mean its error rskin208(PREX2), three values p+208Pb, 3,4He+208Pb rskin208=0.102∼0.354fm based second rm(exp) 58,60,64Ni 3,4He targets. Our result is rskin208(exp)=0.512±0.268fm 3He+208Pb results 4He+58,60,64Ni are rm58(exp)=3.734±0.091 fm, rm60(exp)=3.815±0.094 rm64(exp)=4.001±0.093 fm. 3He+58,60,64Ni rm58(exp)=3.709±0.098 rm60(exp)=3.753±0.112 rm64(exp)=3.822±0.142 conclusion rskin208=0.285±0.030fm. It 5 mentioned above.