Comment on “Reduction of the Spin-Orbit Splittings at the $N=28$ Shell Closure”

A Comment on the Letter by L. Gaudefroy et al., Phys. Rev. Lett. 97, 092501 (2006). The authors of the Letter offer a Reply.

Figure 1

Spectroscopic factors summed up to energy $D=\pm (E_f^{\pm }-E_o)$ for the ${}^{48}\mathrm{Ca}$ core (left) and ${}^{46}\mathrm{Ar}$ core (right). The $C^{2}S$ for the hole state as a function of increasing excitation energy in ${}^{47}\mathrm{Ca}$ and ${}^{45}\mathrm{Ar}$ run to the left, and the $(2J_f+1)C^{2}S$ for the particle states in ${}^{49}\mathrm{Ca}$ and ${}^{47}\mathrm{Ar}$ run to the right.