Elastic electron-tin scattering

Subshell effect in mean square charge radii of stable even cadmium isotopes

“…The error bars quoted originate from the uncertainty of the diffuseness parameter [39] and the experimental error of our IS data. The percentage change of the skin thickness is about the same size as observed by Ficenec et al [12] for the tin isotopes. It should be remembered, however, that the absolute size of 6~/~ is very sensitive to variations of either 6 (/32) or the SMS or A ~P(0) z~678-Therefore, the reliability of information about the change of skin thickness rests on the quality of supplementary data from B(E2) and muonic IS measurements.…”

“…Most pertinent to IS investigations, Ficenec et at. [12] found a definite change of the skin thickness between 114Sn and 116Sn from elastic electron scattering experiments. In Cd the available information is sparser.…”

“…Below N--64 the predominant neutron orbits should be ds/z and g7/2, while for N>64 the neutrons are expected to preferentially occupy the sl/2, d3/z, and h11/~ orbits. Subshell effects at N=64 have been observed in various forms for Sn isotopes [10][11][12]. In Cd, earlier reports [13] of neutron subshell effects in the trend of quadrupole moments of the first excited 2+ states in even isotopes have not been verified by more recent results [14,15].…”

Comparison ofSn120(He6,Mohr1, Faria2, Lichtenthäler3 et al. 2010Phys. Rev. C

“…The relatively large value of w = 1.032 from the 120 Sn(α,α) 120 Sn data at higher energies together with the small value of w ≈ 0.95 derived from the 120 Sn( 6 He, 6 He) 120 Sn data indicates that there is no major problem with the underlying 120 Sn density which should show up as modification for w in the same direction in both experiments. This is not surprising because the 120 Sn charge density has been measured in two independent experiments [44,45], and there is no evidence for a peculiar behavior of the neutron density (e.g. neutron skin) in 120 Sn [55,56].…”

“…of the width parameter w from unity would indicate a failure of the folding potential.) The nuclear densities of 120 Sn and α are derived from the measured charge density distributions which are compiled in [43]: For 120 Sn the three-parameter Gaussian distribution [44] is used. Almost identical folding potentials are obtained from the second available density distribution for 120 Sn [45] which has been measured earlier in a smaller range of momentum transfers.…”