dc.date.accessioned | 2020-05-11T17:53:07Z | |
dc.date.available | 2020-05-11T17:53:07Z | |
dc.date.created | 2019-11-12T11:04:15Z | |
dc.date.issued | 2019 | |
dc.identifier.citation | Goasduff, A Ljungvall, Joa Rodríguez, Tomás R. Bello Garrote, Frank Leonel Etile, Asénath Georgiev, Georgi Giacoppo, Francesca Grente, Lucie Klintefjord, Malin Kusoglu, A Matea, Iolanda Roccia, Stéphanie Salsac, Marie Delphine Sotty, Christophe . B(E2) anomalies in the yrast band of 170Os. Physical Review C. 2019, 100(3), 034302-1-034302-8 | |
dc.identifier.uri | http://hdl.handle.net/10852/75400 | |
dc.description.abstract | Background: The neutron-deficient osmium isotopic chain provides a great laboratory for the study of shape evolution, with the transition from the soft triaxial rotor in 168Os to the well-deformed prolate rotor in 180Os, while shape coexistence appears around N = 96 in 172Os. Therefore, the study of the Os isotopic chain should provide a better understanding of shape changes in nuclei and a detailed scrutiny of nuclear structure calculations. In this paper, the lifetimes of the low-lying yrast states of 170Os have been measured for the first time to investigate the shape evolution with neutron number.
Purpose: Lifetimes of excited states in the ground-state band of 170Os are measured to investigate the shape evolution with neutron number in osmium isotopes and compare with state-of-the-art calculations.
Methods: The states of interest were populated via the fusion-evaporation reaction 142Nd(32S, 4n) at a bombarding energy of 170 MeV at the ALTO facility from IPN (Orsay, France). Lifetimes of the 2+ 1 and 4+ 1 states in 170Os were measured with the recoil-distance Doppler-shift method using the Orsay universal plunger system.
Results: Lifetimes of the two first excited states in 170Os were measured for the first time. A very small B(E2; 4+ 1 → 2+ 1 )/B(E2; 2+ 1 → 0+ 1 ) = 0.38(11) was found, which is very uncharacteristic for collective nuclei. These results were compared to state-of-the-art beyond-mean-field calculations.
Conclusions: Although theoretical results give satisfactory results for the energy of the first few excited states in 170Os and the B(E2; 2+ 1 → 0+ 1 ) they fail to reproduce the very small B(E2; 4+ 1 → 2+ 1 ), which remains a puzzle. | en_US |
dc.language | EN | |
dc.publisher | American Physical Society | |
dc.title | B(E2) anomalies in the yrast band of 170Os | en_US |
dc.type | Journal article | en_US |
dc.creator.author | Goasduff, A | |
dc.creator.author | Ljungvall, Joa | |
dc.creator.author | Rodríguez, Tomás R. | |
dc.creator.author | Bello Garrote, Frank Leonel | |
dc.creator.author | Etile, Asénath | |
dc.creator.author | Georgiev, Georgi | |
dc.creator.author | Giacoppo, Francesca | |
dc.creator.author | Grente, Lucie | |
dc.creator.author | Klintefjord, Malin | |
dc.creator.author | Kusoglu, A | |
dc.creator.author | Matea, Iolanda | |
dc.creator.author | Roccia, Stéphanie | |
dc.creator.author | Salsac, Marie Delphine | |
dc.creator.author | Sotty, Christophe | |
cristin.unitcode | 185,15,4,20 | |
cristin.unitname | Kjerne- og energifysikk | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |
dc.identifier.cristin | 1746401 | |
dc.identifier.bibliographiccitation | info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Physical Review C&rft.volume=100&rft.spage=034302-1&rft.date=2019 | |
dc.identifier.jtitle | Physical Review C | |
dc.identifier.volume | 100 | |
dc.identifier.issue | 3 | |
dc.identifier.doi | https://doi.org/10.1103/PhysRevC.100.034302 | |
dc.identifier.urn | URN:NBN:no-78624 | |
dc.type.document | Tidsskriftartikkel | en_US |
dc.type.peerreviewed | Peer reviewed | |
dc.source.issn | 2469-9985 | |
dc.identifier.fulltext | Fulltext https://www.duo.uio.no/bitstream/handle/10852/75400/2/PhysRevC.100.034302.pdf | |
dc.type.version | PublishedVersion | |
cristin.articleid | 034302 | |