Neutron-skin values and matter and neutron radii determined from reaction cross sections of proton scattering on <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">C</mml:mi><mml:mprescripts /><mml:none /><mml:mn>12</mml:mn></mml:mmultiscripts></mml:math> , <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Ca</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>40</mml:mn><mml:mo>,</mml:mo><mml:mn>48</…

Very lately, the PREX and CREX collaboration present skin values, $r_{\rm skin}^{208}({\rm newPREX2}) =0.278 \pm 0.078\ {\rm (exp)} 0.012\ (theor.)}\,{\rm fm}$ skin}^{48}=0.121 0.026\ 0.024\ (model)}$, respectively. We recently determined a neutron-skin value skin}^{208}=0.278 0.035$fm from measured reaction cross sections $\sigma_{\rm R}({\rm exp})$ of p+$^{208}$Pb scattering in range incident energies $10 \lsim E_{\rm in} 100$ MeV where chiral (Kyushu) $g$-matrix folding model is reliable for $^{12}$C+$^{12}$C scattering. The data are available proton on $^{58}$Ni, $^{40,48}$Ca, $^{12}$C targets. Our first aim to test Kyushu $20 180$ MeV. second determine values skin}$ matter neutron radii, m}$ n}$, $^{208}$Pb, exp})$. method with densities scaled D1S-GHFB+AMP densities, stands Gogny-D1S HFB (GHFB) angular momentum projection (AMP). As scattering, we find that our For deduced skin}^{208}(\sigma_{\rm R})=0.299 0.020$ fm. results compared previous works. result R}) = 0.299 fm agrees PREX2}) 0.283\pm 0.071$ In addition, skin}^{48}=0.103 0.022$ consistent value.