Spectroscopic factors for the 1p shell

New determination of proton spectroscopic factors and reduced widths forBe8states in the 16.5–18.0 MeV excitation energy region via the study of theLi7(Belhout1, Ouichaoui2, Beaumevieille3 et al. 2017Phys. Rev. C4000View full textAdd to dashboardCite

“…One can observe, first, in both two tables (IV, V) that our spectroscopic factors for the weakly excited 2 + (16.922) state are remarkably smaller than those for the strongly populated 2 + (16.626) state in the 7 Li( 3 He,d) 8 Be reaction, in overall consistency with shell model predictions [13,54]. These results, which can be expected from the corresponding patterns of these two 2 + states in the recorded deuteron energy spectra (see Figs.…”

“…(3, 4)) obviously confirm Marion's assumptions [9,10] that the 7 Be + n and 7 Li + p single-particle model configurations dominate, respectively, the structures of these two 2 + , T = 0 + 1 isospin-mixed states. As can be seen in [45,46], respectively, where they are compared to experimental values from earlier works and to Cohen and Kurath's shell-model predictions [54]. [13,54].…”

“…Besides, the results derived here for the proton (S 1p 1/2 , S 1p 3/2 ) partial spectroscopic factors of the three studied states of 8 Be are reported in table V where they are compared to Cohen and Kurath's shell model predictions [54].…”

“…The values of these ratios are reported in table III together with the S 1p 1/2 /S 1p 3/2 partial spectroscopic factor ratios derived partial spectroscopic factors for the 1p shell. Cohen and Kurath [54] have also calculated S 1p 1/2 and S 1p 3/2 spectroscopic factor values separately for each isospin state. Then, the (S 1p 1/2 /S 1p 3/2 ) C.K.…”

“…Then, the (S 1p 1/2 /S 1p 3/2 ) C.K. ratio following these authors [54] for the pure T = 1 isospin state at 17.640 MeV was directly deduced, while the same ratio for the T = 0 + 1 isospin-mixed states at 16.626 MeV and 16.922 MeV were derived using the spectroscopic factor values calculated as follows for j = 1/2 and 3/2:…”