Structure of 128,129,130Xe through multi-reference energy density functional calculations

• Verfasst von: Bally, Benjamin [VerfasserIn]
• Verfasst von: Giacalone, Giuliano [VerfasserIn]
• Verfasst von: Bender, Michael [VerfasserIn]
• Titel: Structure of 128,129,130Xe through multi-reference energy density functional calculations
• Verf.angabe: Benjamin Bally, Giuliano Giacalone, Michael Bender
• E-Jahr: 2022
• Jahr: 29 September 2022
• Umfang: 24 S.
• Fussnoten: Die Zahlen 128, 129 und 130 erscheinen im Titel hochgestellt ; Gesehen am 10.01.2023
• Titel Quelle: Enthalten in: The European physical journal / A
• Ort Quelle: Berlin : Springer, 1998
• Jahr Quelle: 2022
• Band/Heft Quelle: 58(2022), 9, Artikel-ID 187, Seite 1-24
• ISSN Quelle: 1434-601X
• DOI: doi:10.1140/epja/s10050-022-00833-4
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1830608770

Abstract

Recently, values for the Kumar quadrupole deformation parameters of the nucleus 130Xe have been computed from the results of a Coulomb excitation experiment, indicating that this xenon isotope has a prominent triaxial ground state. Within a different context, it was recently argued that the analysis of particle correlations in the final states of ultra-relativistic heavy-ion collisions performed at the Large Hadron Collider (LHC) points to a similar structure for the adjacent isotope, 129Xe. In the present work, we report on state-of-the-art multi-reference energy density functional calculations that combine projection on proton and neutron number as well as angular momentum with shape mixing for the three isotopes 128,129,130Xe using the Skyrme-type pseudo-potential SLyMR1. Exploring the triaxial degree of freedom, we demonstrate that the ground states of all three isotopes display a very pronounced triaxial structure. Moreover, comparison with experimental results shows that the calculations reproduce fairly well the low-energy excitation spectrum of the two even-mass isotopes. By contrast, the calculation of 129Xe reveals some deficiencies of the effective interaction.