Single-particle states and parity doublets in odd-Z 221Ac and 225Pa from α-decay spectroscopy
Parr, E., Smith, J. F., Greenlees, P. T., Butler, P. A., Auranen, K., Chapman, R., Cox, D. M., Cullen, D. M., Gaffney, L. P., Grahn, T., Gregor, E. T., Grocutt, L., Herzáň, A., Herzberg, R.-D., Hodge, D., Jakobsson, U., Julin, R., Juutinen, S., Keatings, J. M., . . . Uusitalo, J. (2022). Single-particle states and parity doublets in odd-Z 221Ac and 225Pa from α-decay spectroscopy. Physical Review C, 105(3), Article 034303. https://doi.org/10.1103/PhysRevC.105.034303
Published inPhysical Review C
Parr, E. |
DisciplineKiihdytinlaboratorioFysiikkaYdin- ja kiihdytinfysiikan huippuyksikköAccelerator LaboratoryPhysicsCentre of Excellence in Nuclear and Accelerator Based Physics
© 2022 American Physical Society
Low-lying states in the odd-Z isotopes 22189Ac132 and 22591Pa134 have been studied using α-particle and αγ-coincidence spectroscopy in the 225Pa→221Ac→217Fr decay chain. Ground-state spin and parity assignments of Iπ = 5/2− are proposed for both 221Ac and 225Pa, with the odd proton occupying the Ω = 5/2 orbital of the quadrupole-octupole deformed shell model in both nuclei. In 221Ac, excited states in the bands based on the Ω = 5/2 and Ω = 3/2 orbitals have been identified, including proposed parity-doublet states. The results suggest that reflection-asymmetric deformation of the ground state persists in the odd-A members of the isotope chains down to N = 132 for Ac and N = 134 for Pa, before reaching the transitional region at N = 130.
PublisherAmerican Physical Society (APS)
ISSN Search the Publication Forum2469-9985
Publication in research information system
MetadataShow full item record
Additional information about fundingThis work is supported in part by the following bodies: STFC (UK) under Grants No. ST/L005808/1 and No. ST/P005101/1 (UWS); the EU 7th Framework Programme, Integrating Activities Transnational Access, Project No. 262010 (ENSAR); the Academy of Finland under the Finnish Centre of Excellence Programme (Nuclear and Accelerator Based Physics Programme at JYFL); the Scottish Universities Physics Alliance, Glasgow, United Kingdom (SUPA); the Slovak Research and Development Agency under Contract No. APVV-20-0532; the Slovak grant agency VEGA (Contract No. 2/0067/21); and the project ITMS code 26210120023, supported by the Research and Development Operational Programme funded by ERDF. The authors would also like to acknowledge GAMMAPOOL support for the JUROGAM HPGe detectors. ...
Showing items with similar title or keywords.
Exploring the boundaries of the nuclear landscape : α-decay properties of 211Pa Auranen, K.; Uusitalo, J.; Badran, H.; Grahn, T.; Greenlees, P. T.; Herzáň, A.; Jakobsson, U.; Julin, R.; Juutinen, S.; Konki, J.; Leino, M.; Leppänen, A.-P.; O'Neill, G.; Pakarinen, J.; Papadakis, P.; Partanen, J.; Peura, P.; Rahkila, P.; Ruotsalainen, P.; Sandzelius, M.; Sarén, J.; Scholey, C.; Sinclair, L.; Sorri, J.; Stolze, S.; Voss, A. (American Physical Society (APS), 2020)Employing the recoil ion transport unit (RITU) and a fusion-evaporation reaction, the α decay of 211Pa has been identified via the implantation-decay correlation technique through observation of chains up to four consecutive ...
Role of Single-Particle Energies in Microscopic Interacting Boson Model Double Beta Decay Calculations Kotila, Jenni (MDPI, 2021)Single-particle level energies form a significant input in nuclear physics calculations where single-particle degrees of freedom are taken into account, including microscopic interacting boson model investigations. The ...
Spectroscopy of 34,35Si by beta decay : sd-fp shell gap and single-particle states Nummela, Saara; Baumann, P.; Caurier, E.; Dessagne, P.; Jokinen, Ari; Knipper, A.; Scornet, G. Le; Miehé, C.; Nowacki, F.; Oinonen, M.; Radivojevic, Zoran; Ramdhane, M.; Walter, G.; Äystö, Juha; Collaboration, ISOLDE (American Physical Society, 2001)The 34,35Al b decays have been studied at the CERN online mass separator ISOLDE by b-g, b-g-g, and b-n-g measurements in order to corroborate the low-level description of 34Si and to obtain the first information on the ...
Computational modeling of isotropic electron paramagnetic resonance spectra of doublet state main group radicals Tuononen, Heikki; Chivers, Tristram; Armstrong, Andrea; Fedorchuk, Chantall; Boeré, René (Elsevier, 2007)The combined use of theoretical and mathematical methods in the analysis of electron paramagnetic resonance data has greatly increased the ability to interpret even the most complex spectra reported for doublet state ...
Single-particle and collective excitations in the transitional nucleus 166Os Stolze, Sanna; Grahn, Tuomas; Julin, R; Joss, D T; Andgren, K; Auranen, Kalle; Bönig, S; Cox, Daniel; Darby, I G; Doncel, M; Eeckhaudt, S; Greenlees, Paul T; Hadinia, B; Herzáň, Andrej; Jakobsson, Ulrika; Jones, P; Juutinen, Sakari; Ketelhut, S; Konki, Joonas; Kröll, T; Leppänen, A-P; Nyman, M; Page, R D; Pakarinen, J; Partanen, J; McPeake, C G; O’Donnell, D; Peura, Pauli; Rahkila, Panu; Ruotsalainen, Panu; Sandzelius, Mikael; Sarén, Jan; Saygı, B; Scholey, Catherine; Simpson, J; Sorri, Juha; Taylor, M J; Thornthwaite, A; Uusitalo, Juha (IOP Publishing, 2021)The mean lifetimes of the lowest energy 2+, 8+ and 9− states in 166Os have been measured using the recoil distance Doppler-shift method in conjunction with a selective recoil-decay tagging technique. These measurements ...