dc.date.accessioned | 2020-05-20T18:33:12Z | |
dc.date.available | 2020-05-20T18:33:12Z | |
dc.date.created | 2020-01-15T12:37:39Z | |
dc.date.issued | 2019 | |
dc.identifier.citation | Grocutt, L Chapman, R Bouhelal, M Haas, F Goasduff, A Smith, J. F. Courtin, S Bazzacco, D Braunroth, T Capponi, L Corradi, L Derkx, X Desesquelles, P Doncel, M Fioretto, E Gottardo, A Liberati, V Melon, B Mengoni, D Michelagnoli, C Mijatovic, T Modamio, V Montagnoli, G Montanari, D Mulholland, K. F. Napoli, D.R. Petrache, C Pipidis, A Recchia, F Sahin, Eda Singh, PP Stefanini, AM Szilner, S Valiente-Dobón, JJ . Lifetime measurements of N≃20 phosphorus isotopes using the AGATA γ-ray tracking spectrometer. Physical Review C. 2019, 100(6) | |
dc.identifier.uri | http://hdl.handle.net/10852/76016 | |
dc.description.abstract | Lifetimes of excited states of the phosphorus isotopes 33 , 34 , 35 , 36 15 P have been measured by using the differential recoil-distance method. The isotopes of phosphorus were populated in binary grazing reactions initiated by a beam of 36 S ions of energy 225 MeV incident on a thin 208 Pb target mounted in the Cologne plunger apparatus. The combination of the PRISMA magnetic spectrometer and an early implementation of the AGATA γ -ray tracking array was used to detect γ rays in coincidence with projectile-like nuclear species. Lifetime measurements of populated states were made within the range from about 1 to 100 ps. The number of states for which lifetime measurements were possible was limited by statistics. For 33 P , lifetime limits were determined for the first 3/2+ and 5/2+ states at 1431 and 1848 keV, respectively; the results are compared with previous published lifetime values. The lifetime of the first 2+ state of 34 P at 429 keV was determined and compared with earlier measurements. For 35 P , the states for which lifetimes, or lifetime limits, were determined were those at 2386, 3860, 4101, and 4493 keV, with Jπ values of 3/2+, 5/2+, 7/2− 1 , and 7/2− 2 , respectively. There have been no previous published lifetimes for states in this nucleus. A lifetime was measured for the stretched π ( 1 f 7 / 2 ) ⊗ ν ( 1 f 7 / 2 ) J π = ( 7 + ) state of 36 P at 5212 keV and a lifetime limit was established for the stretched π ( 1 d 3 / 2 ) ⊗ ν ( 1 f 7 / 2 ) J π = ( 5 − ) state at 2030 keV. There are no previously published lifetimes for states of 36 P . Measured lifetime values were compared with the results of state-of-the-art shell-model calculations based on the PSDPF effective interaction. In addition, measured branching ratios, published mixing ratios, and electromagnetic transition rates, where available, have been compared with shell-model values. In general, there is good agreement between experiment and the shell model; however there is evidence that the shell-model values of the M1 transition rates for the 3/2+1→ 1 / 2 + (ground state) and 5/2+1→ 3 / 2 + 1 transitions in 33 P underestimate the experimental values by a factor between 5 and 10. In 35 P there are some disagreements between experimental and shell-model values of branching ratios for the first and second excited 7/2− states. In particular, there is a serious disagreement for the decay characteristics of the second 7/2− state at 4493 keV, for which the shell-model counterpart lies at 4754 keV. In this case, the shell-model competing electromagnetic decay branches are dominated by E1 and M1 transitions. | en_US |
dc.language | EN | |
dc.publisher | American Physical Society | |
dc.title | Lifetime measurements of N≃20 phosphorus isotopes using the AGATA γ-ray tracking spectrometer | en_US |
dc.type | Journal article | en_US |
dc.creator.author | Grocutt, L | |
dc.creator.author | Chapman, R | |
dc.creator.author | Bouhelal, M | |
dc.creator.author | Haas, F | |
dc.creator.author | Goasduff, A | |
dc.creator.author | Smith, J. F. | |
dc.creator.author | Courtin, S | |
dc.creator.author | Bazzacco, D | |
dc.creator.author | Braunroth, T | |
dc.creator.author | Capponi, L | |
dc.creator.author | Corradi, L | |
dc.creator.author | Derkx, X | |
dc.creator.author | Desesquelles, P | |
dc.creator.author | Doncel, M | |
dc.creator.author | Fioretto, E | |
dc.creator.author | Gottardo, A | |
dc.creator.author | Liberati, V | |
dc.creator.author | Melon, B | |
dc.creator.author | Mengoni, D | |
dc.creator.author | Michelagnoli, C | |
dc.creator.author | Mijatovic, T | |
dc.creator.author | Modamio, V | |
dc.creator.author | Montagnoli, G | |
dc.creator.author | Montanari, D | |
dc.creator.author | Mulholland, K. F. | |
dc.creator.author | Napoli, D.R. | |
dc.creator.author | Petrache, C | |
dc.creator.author | Pipidis, A | |
dc.creator.author | Recchia, F | |
dc.creator.author | Sahin, Eda | |
dc.creator.author | Singh, PP | |
dc.creator.author | Stefanini, AM | |
dc.creator.author | Szilner, S | |
dc.creator.author | Valiente-Dobón, JJ | |
cristin.unitcode | 185,15,4,20 | |
cristin.unitname | Kjerne- og energifysikk | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |
dc.identifier.cristin | 1773641 | |
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=&rft.date=2019 | |
dc.identifier.jtitle | Physical Review C | |
dc.identifier.volume | 100 | |
dc.identifier.issue | 6 | |
dc.identifier.pagecount | 18 | |
dc.identifier.doi | https://doi.org/10.1103/PhysRevC.100.064308 | |
dc.identifier.urn | URN:NBN:no-79143 | |
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/10852/76016/2/PhysRevC.100.064308.pdf | |
dc.type.version | PublishedVersion | |
cristin.articleid | 064308 | |
dc.relation.project | NFR/240104 | |