Level structure of <math><mmultiscripts><mi>Ac</mi><mprescripts/><none/><mn>221</mn></mmultiscripts></math> and <math><mmultiscripts><mi>Fr</mi><mprescripts/><none/><mn>217</mn></mmultiscripts></math> from decay spectroscopy, and reflection asymmetry in <math><mmultiscripts><mi>Ac</mi><mprescripts/><none/><mn>221</mn></mmultiscripts></math> - Archive ouverte HAL
Article Dans Une Revue Phys.Rev.C Année : 2023

Level structure of Ac221 and Fr217 from decay spectroscopy, and reflection asymmetry in Ac221

Résumé

Pa225 and Ac221 were produced at the IGISOL facility through proton-induced fusion-evaporation reactions and have been studied using α-particle spectroscopy, as well as α-γ and α-electron coincidence spectroscopy. The level scheme of Ac221, daughter of Pa225, and of Fr217, daughter of Ac221 were reconstructed. An interpretation of Ac221 levels as K=5/2± and K=3/2± parity-doublet bands is proposed. Such bands appear in reflection-asymmetric models and would be an indication of a static reflection asymmetric shape for Ac221.

Dates et versions

hal-04154972 , version 1 (07-07-2023)

Identifiants

Citer

E Rey-Herme, A Raggio, M Vandebrouck, I Moore, I Pohjalainen, et al.. Level structure of Ac221 and Fr217 from decay spectroscopy, and reflection asymmetry in Ac221. Phys.Rev.C, 2023, 108 (1), pp.014304. ⟨10.1103/PhysRevC.108.014304⟩. ⟨hal-04154972⟩
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