| Title: | Investigating the prolate-to-oblate shape phase transition: Lifetime measurements and
γ spectroscopy of the low-lying negative parity structure in Os193 |
| Authors: | Knafla, L. Browse this author |
| Nomura, K. Browse this author |
| Esmaylzadeh, A. Browse this author |
| Harter, A. Browse this author |
| Jolie, J. Browse this author |
| Karayonchev, V. Browse this author |
| Kim, Y. H. Browse this author |
| Köster, U. Browse this author |
| Ley, M. Browse this author |
| Michelagnoli, C. Browse this author |
| Pfeil, A. Browse this author |
| Régis, J.-M. Browse this author |
| von Spee, F. Browse this author |
| Issue Date: | Jan-2024 |
| Publisher: | American Physical Society (APS) |
| Journal Title: | Physical Review C |
| Volume: | 109 |
| Issue: | 1 |
| Start Page: | 014313 |
| Publisher DOI: | 10.1103/PhysRevC.109.014313 |
| Abstract: | Excited states in 193Os were populated using a 192Os(𝑛th.,𝛾)193Os thermal neutron capture reaction, with neutrons provided by the high-flux reactor of the Institut Laue-Langevin in Grenoble, France. Lifetimes of low-spin excited states were measured using the generalized centroid difference method. A total of eight mean lifetimes of low-lying excited states were determined for the first time, and limits for the lifetimes of three further excited states were established. Additionally, 𝛾−𝛾 angular correlations were analyzed to assign spins to previously known excited states up to 1 MeV, and extract multipole mixing ratios for several transitions. The new spectroscopic information is compared to calculations in the framework of the interacting boson-fermion model, based on the nuclear density functional theory, to investigate the prolate-to-oblate shape phase transition, predicted to occur in the neutron rich 𝐴≈190 region. |
| Rights: | ©2024 American Physical Society |
| Type: | article |
| URI: | http://hdl.handle.net/2115/92685 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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