Nuclear radius parameters (r0) for even-even nuclei from alpha decay

Singh, Sukhjeet; Kumar, Sushil; Singh, Balraj; Jain, Ashok Kumar

doi:10.1016/j.nds.2020.07.001

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B a = 2251

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Cited by 29 publications

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“…It was determined using α-γ coincidences and thus has a larger relative uncertainty as the detection efficiencies are taken into account. The α-decay hindrance factors for 225 Pa decay are extracted from the energies and intensities using Preston's spin-independent equations [39,40] with r 0 = 1.5475 fm interpolated from neighboring even-even nuclei and T 1/2 = 1.95 (10) s the lifetime measured in Ref. [24].…”

Section: B a = 225mentioning

confidence: 99%

Level structure of Ac221 and Fr217 from decay spectroscopy, and reflection asymmetry in
Rey-Herme
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,
Raggio
²
,
Vandebrouck
³

et al. 2023
Phys. Rev. C
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225 Pa and 221 Ac 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 221 Ac, daughter of 225 Pa, and of 217 Fr, daughter of 221 Ac were reconstructed. An interpretation of 221 Ac 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 221 Ac.

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