Pairing-quadrupole interplay in the neutron-deficient tin nuclei: First lifetime measurements of low-lying states in <SUP>106,108</SUP>Sn



Siciliano, M, Valiente-Dobon, JJ, Goasduff, A, Nowacki, F, Zuker, AP, Bazzacco, D, Lopez-Martens, A, Clement, E, Benzoni, G, Braunroth, T
et al (show 60 more authors) (2020) Pairing-quadrupole interplay in the neutron-deficient tin nuclei: First lifetime measurements of low-lying states in <SUP>106,108</SUP>Sn. PHYSICS LETTERS B, 806. p. 135474.

Access the full-text of this item by clicking on the Open Access link.

Abstract

The lifetimes of the low-lying excited states 2+ and 4+ have been directly measured in the neutron-deficient 106,108Sn isotopes. The nuclei were populated via a deep-inelastic reaction and the lifetime measurement was performed employing a differential plunger device. The emitted γ rays were detected by the AGATA array, while the reaction products were uniquely identified by the VAMOS++ magnetic spectrometer. Large-Scale Shell-Model calculations with realistic forces indicate that, independently of the pairing content of the interaction, the quadrupole force is dominant in the B(E2;21+→0g.s.+) values and it describes well the experimental pattern for 104−114Sn; the B(E2;41+→21+) values, measured here for the first time, depend critically on a delicate pairing-quadrupole balance, disclosed by the very precise results in 108Sn.

Item Type: Article
Uncontrolled Keywords: Lifetime, Nuclear structure, Multi-nucleon transfer, Light Sn, Tracking array
Depositing User: Symplectic Admin
Date Deposited: 01 Jun 2020 09:13
Last Modified: 05 Oct 2023 08:57
DOI: 10.1016/j.physletb.2020.135474
Open Access URL: https://doi.org/10.1016/j.physletb.2020.135474
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3089218