Hadyńska-Klk, K., Napiorkowski, P. J., Zielińska, M. et al. (107 more authors) (2018) Quadrupole collectivity in Ca 42 from low-energy Coulomb excitation with AGATA. Physical Review C. 024326. pp. 1-20. ISSN 2469-9993
Abstract
A Coulomb-excitation experiment to study electromagnetic properties of Ca42 was performed using a 170-MeV calcium beam from the TANDEM XPU facility at INFN Laboratori Nazionali di Legnaro. γ rays from excited states in Ca42 were measured with the AGATA spectrometer. The magnitudes and relative signs of ten E2 matrix elements coupling six low-lying states in Ca42, including the diagonal E2 matrix elements of 21+ and 22+ states, were determined using the least-squares code gosia. The obtained set of reduced E2 matrix elements was analyzed using the quadrupole sum rule method and yielded overall quadrupole deformation for 01,2+ and 21,2+ states, as well as triaxiality for 01,2+ states, establishing the coexistence of a weakly deformed ground-state band and highly deformed slightly triaxial sideband in Ca42. The experimental results were compared with the state-of-the-art large-scale shell-model and beyond-mean-field calculations, which reproduce well the general picture of shape coexistence in Ca42.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | ©2018 American Physical Society. |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Funding Information: | Funder Grant number SCIENCE AND TECHNOLOGY FACILITIES COUNCIL (STFC) ST/P003885/1 SCIENCE AND TECHNOLOGY FACILITIES COUNCIL (STFC) ST/L005727/1 |
Depositing User: | Pure (York) |
Date Deposited: | 03 Apr 2018 16:00 |
Last Modified: | 18 Feb 2025 00:08 |
Published Version: | https://doi.org/10.1103/PhysRevC.97.024326 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1103/PhysRevC.97.024326 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:129251 |