A PSDPF interaction to describe the 1 ℏω intruder states in sd shell nuclei

Structure of chlorine isotopes populated by heavy ion transfer reactions

“…6 the occupation probabilities of selected populated states (from 054322-5 TABLE I. The γ transitions assigned in the present work to the 39,41,43 Cl isotopes. In the third column, the transition intensities (in effective number of counts) after taking into account the Clara efficiency, are listed.…”

“…2. Doppler corrected γ -ray spectra for 37,39,41 Cl populated in 40 Ar + 208 Pb by detecting the −1p − 2n, −1p, and −1p + 1n channels in Prisma and the coincident γ rays in Clara. The strongest transitions are labeled with E γ ; see Ref.…”

“…The γ -ray spectra of the odd-even Cl isotopes, i.e., 37,39,41 Cl corresponding to the −1p − 2n, −1p, and −1p + 2n channels, respectively, are shown in Fig. 2 whereas those of the odd-odd Cl isotopes, i.e., 38,40,42 Cl corresponding to the −1p − 1n, −1p + 1n, and −1p + 3n channels, respectively, are shown in Fig.…”

“…The states, described in the 0hω space [40], are compared with the experimental findings for all chlorine isotopes with N > 20. For the 37 Cl (N = 20) case we used the recently developed (0 + 1)hω interaction called PSDPF [41]. This interaction uses the full p-sd-pf space, allowing one nucleon jump from p to sd or from sd to pf shells, in order to describe one-particle-one-hole intruder states throughout the sd shell.…”

“…This fact is closely connected with the difficulty of accessing this region of the nuclear chart. The knowledge of the level scheme of 41 Cl is limited to the three lowest lying states from the study of the 37 Cl + 160 Gd deep-inelastic collision [50]. The 129.7, and 761.7 keV transitions were identified to deexcite the two lowest excited states, (3/2 + ) and (5/2 + ), respectively.…”