Charge radii of 11−16C, 13−17N and 15−18O determined from their charge-changing cross-sections and the mirror-difference charge radii

• DOI: 10.1016/j.physletb.2024.139082
• Publication Date: 2024-10-18T13:58:12Z
• Authors: J.W. Zhao; B.-H. Sun; I. Tanihata; J.Y. Xu; K.Y. Zhang; A. Prochazka; L.H. Zhu; S. Terashima; J. Meng; L.C. He; C.Y. Liu; G.S. Li; C.G. Lu; W.J. Lin; W.P. Lin; Z. Liu; P.P. Ren; Z.Y. Sun; F. Wang; J. Wang; M. Wang; S.T. Wang; X.L. Wei; X.D. Xu; J.C. Zhang; M.X. Zhang; X.H. Zhang
• Keywords: Charge exchange; Effective nuclear charge

Charge-changing cross-sections of $^{11-16}$C, $^{13-17}$N and $^{15-18}$O on a carbon target have been determined at energies around 300 MeV/nucleon. A nucleon separation energy-dependent correction factor has been introduced to the Glauber model calculation for extracting the nuclear charge radii from the experimental CCCSs. The charge radii of $^{11}$C, $^{13,16}$N and $^{15}$O thus were determined for the first time. With the new radii, we studied the experimental mirror-difference charge radii ($ΔR_{\text {ch}}^{\text {mirror}}$) of $^{11}$B-$^{11}$C, $^{13}$C-$^{13}$N, $^{15}$N-$^{15}$O, $^{17}$N-$^{17}$Ne pairs for the first time. We find that the $ΔR_{\text {ch}}^{\text {mirror}}$ values of $^{13}$C-$^{13}$N and $^{15}$N-$^{15}$O pairs follow well the empirical relation to the isospin asymmetry predicted by the $ab$ $initio$ calculations, while $ΔR_{\text {ch}}^{\text {mirror}}$ of $^{11}$B-$^{11}$C and $^{17}$N-$^{17}$Ne pairs deviate from such relation by more than two standard deviations.<br/>3 figures, submitted to Physics Letters B<br/>