The 9Li(d,p) reaction, a specific probe of 10Li, paradigm of parity--inverted nuclei around N=6 closed shell

Abstract

We show, within the framework of renormalized nuclear field theory and of the induced reaction surrogate formalism, that the highly debated ${}^{10}$Li structure, observed in a recent ${}^9$Li(d,p)${}^{10}$Li one--neutron transfer experiment is consistent with or better, requires the presence of a virtual $1/2^{+}$ state of similar single--particle strength than that of the $1/2^{-}$ resonance at 0.45$\pm$ 0.03 MeV. Based on continuum spectroscopy self-energy techniques, we find that the physical mechanism responsible for parity inversion in ${}_3^{10}$Li is the same as that at the basis of the similar phenomenon observed in ${}_4^{11}$Be and to that needed in ${}^{11}$Li to have an important $s$--wave ground state component. Furthermore, it is also consistent with the (normal) sequence of the $1p_{1/2}$ and $2s_{1/2}$ levels in the $N=7$ isotones ${}_5^{12}$B and ${}_6^{13}$C.

Comments: Revised text and figures. The paper includes supplemental material