Global properties of proton-hole strengths in mass 54 to 70 nuclei

Evolution of single-particle structure of silicon isotopes

“…In this situation, with insufficient experimental information, the spherical approximation can be justified as an initial estimate. It should also be noted good results were obtained for 28 Si in dispersive optical model (DOM) in spherical approach [12].…”

“…Subshell occupation probabilities N nlj are normalized on the full possible number of the nucleons 2j + 1 for the nlj subshell and defined as [28]:…”

“…Despite this, variety of available data allows to put f + = f − = 1 in (2), omit the renormalization procedure and apply the experimental spectroscopies directly to evaluate the single-particle energies. 16 experiments on the 28 Si target and 19 experiments on the 30 Si target were 28 Si from one-nucleon transfer reaction, adopted in the joint numerical analysis. The spectroscopic strengths G nlj for a) pickup of neutron [30] and proton [31] and b) stripping of neutron [32] and proton [33].…”

“…As it was already shown [2], silicon isotopic chain is one of significant candidates for the detailed investigation in this case. Its stable isotopes, 28 Si, 29 Si and 30 Si, may provide a bulk of experimental data of different reliability. So, an appropriate selection procedure and analysis can be applied for them.…”

“…Analysis of experimental information is complicated by the fact that stable silicon isotopes belong to the region of nuclei with stable deformation. The experimental value of quadrupole deformation of 28 Si is β 2 = −0.42 ± 0.02 [11]. The magnitude of deformation of the remaining isotopes has not yet been determined exactly and, since different theoretical approaches lead to different results, requires a more accurate experimental study.…”