No abstract available

No abstract available

[en] The low-lying spectrum for ¹⁰⁷Sn is described using the Otsuka, Arima and Iachello mapped interacting boson-fermion model Hamiltonian. (author)

[en] ¹⁰⁷Sn and ¹⁰⁷In/subm/, produced in ³He bombardments of ¹⁰⁶Cd and transported with a He jet system, have been identified with Ge(Li) γ-ray detectors. Half-lives of these nuclides were determined to be 2.90 +- 0.05 min and 50.4 +- 0.6 sec, respectively

[en] The study of nuclei near the N=Z=50 shell closures offer a fascinating avenue to deepen our knowledge of nuclear shell structures near the proton drip line. The presence of a limited number of valance nucleons compared to the ¹⁰⁰Sn core serve as an ideal testing ground for exploring various structural phenomena. These include magnetic and antimagnetic rotation, band termination, and the assessment of how the nucleus changes from collective to non-collective structures, or vice versa. These investigations offer a more profound under-standing of how residual interactions influence the behavior of particles as they move through different energy levels within the nucleus. The odd-A ¹⁰⁷Sn nucleus, situated between ¹⁰⁵Sn and ¹⁰⁹Sn, was previously characterised up to low-spin states, including the identification of positive parity states up to Jπ = 25/2⁺ and negative parity states up to Jπ = 31/2^-, has been revisited in this current work. The level structure of ¹⁰⁷Sn further elucidated through the in-beam gamma-ray spectroscopy

[en] Projectile fragmentation reactions at intermediate energies characterized by the emission of several intermediate mass fragments (3 ≤ Z ≤ 20) is a natural continuation of fission towards complete vaporization. In this work using a projectile fragmentation model, we study the average number of intermediate mass fragment production as a function of Z_bound (= sum of charges of all projectile fragments with Z > 1) and charge distributions at different Z_bound intervals for Sn¹⁰⁷ and Sn¹²⁴ on natural tin (Sn¹¹⁹) reactions at 600 MeV per nucleon energy

[en] The A/Z dependence of projectile fragmentation at relativistic energies has been studied with the ALADIN forward spectrometer at SIS. A stable beam of ¹²⁴Sn and radioactive beams of ¹²⁴La and ¹⁰⁷Sn at 600 MeV per nucleon have been used in order to explore a wide range of isotopic compositions. Chemical freeze-out temperatures are found to be nearly invariant with respect to the A/Z of the produced spectator sources, consistent with predictions for expanded systems. Small Coulomb effects (ΔT≅0.6 MeV) appear for residue production near the onset of multifragmentation

[en] In this work, we present recent shell model calculations, based on a realistic nucleon-nucleon interaction, for the light ^107,109Sn nuclei. By combining the calculations with the semi-classical Coulomb excitation code GOSIA, a set of γ-ray intensities has been generated. The calculated intensities are compared with the data from recent Coulomb excitation studies in inverse kinematics at the REX-ISOLDE facility with the nucleus ¹⁰⁷Sn. The results are discussed in the context of the ordering of the single-particle orbits relative to ¹⁰⁰Sn.

No abstract available

[en] Low-spin, low energy-levels in ^109,107Sn have been studied following the β-decay of a 17-s ¹⁰⁹Sb and a 4-s ¹⁰⁷Sb, respectively. A number of new transitions and levels are established in ¹⁰⁹Sn with improved support for spin and parity assignments for previously known states. In addition, the presence of two pairs of levels separated by only 14 keV is confirmed. Four new levels are observed in ¹⁰⁷Sn, three of them are below 1 MeV excitation energy. The structure of these nuclides is discussed, focusing on three-quasiparticle cluster structures, movement of the Fermi level, and extrapolations for the single-neutron levels in ¹⁰¹Sn