Scatter Plot from Scientific Research

Experimentally determined absolute R_c^{12}, R_c^{13} and nuclear charge radius difference deltaR_c^{12,13} = R_c^{13} - R_c^{12} of 12,13 C determined with elastic electron scattering (blue), muonic atom spectroscopy (mu-atoms, purple) and collinear laser spectroscopy (CLS, black). Results from CLS and e--scattering were combined to obtain an improved R_c^{13} (black & blue) purely from electronic measurements. The differential rms nuclear charge radii from e--scattering and mu-atoms are differences of absolute radii while the CLS result is determined directly from the isotope shift and ab initio atomic structure calculations using Eq. (2). deltaR_c^{12,13} is also compared to ab initio valence-space in-medium similarity renormalization group (VS-IMSRG, red) and in-medium no-core shell-model (IM-NSCM, orange) calculations. The lower-order IM-NSCM results are plotted with open symbols. Results from nuclear-lattice effective field theory (NLEFT, brown) were published by Elhatisari et al. 61. The numerical values of this plot are listed in Table 2.

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