Isomers and alignments in 191Ir and 192Os
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Dracoulis, George; Lane, Gregory; Byrne, Aidan; Watanabe, H; Hughes, Richard; Palalani, Nyaladzi; Kondev, Filip G; Carpenter, M P; Seweryniak, D; Zhu, Y; Janssens, R V F; Lister, C J; Lauritsen, T; Chowdhury, P; Shi, Yue; Xu, F R
Description
Deep-Inelastic reactions have been used to populate high-spin states in the even-even osmium isotopes and in the iridium neighbors. New isomers have been identified in 190Os, 192Os, 194Os, 191Ir and 193Ir. These include a 2 ns 12 + state at 2865 keV and a 295 ns, 20 + state at 4580 keV in 192Os. Although a number of multi-quasiparticle states arising from prolate and triaxial deformations are expected in these nuclei, the main structures in 192Os can be interpreted as a two-stage alignment of i...[Show more]
dc.contributor.author | Dracoulis, George | |
---|---|---|
dc.contributor.author | Lane, Gregory | |
dc.contributor.author | Byrne, Aidan | |
dc.contributor.author | Watanabe, H | |
dc.contributor.author | Hughes, Richard | |
dc.contributor.author | Palalani, Nyaladzi | |
dc.contributor.author | Kondev, Filip G | |
dc.contributor.author | Carpenter, M P | |
dc.contributor.author | Seweryniak, D | |
dc.contributor.author | Zhu, Y | |
dc.contributor.author | Janssens, R V F | |
dc.contributor.author | Lister, C J | |
dc.contributor.author | Lauritsen, T | |
dc.contributor.author | Chowdhury, P | |
dc.contributor.author | Shi, Yue | |
dc.contributor.author | Xu, F R | |
dc.coverage.spatial | Manchester UK | |
dc.date.accessioned | 2015-12-10T22:51:14Z | |
dc.date.created | August 8-12 2011 | |
dc.identifier.isbn | 1742-6596 | |
dc.identifier.uri | http://hdl.handle.net/1885/58955 | |
dc.description.abstract | Deep-Inelastic reactions have been used to populate high-spin states in the even-even osmium isotopes and in the iridium neighbors. New isomers have been identified in 190Os, 192Os, 194Os, 191Ir and 193Ir. These include a 2 ns 12 + state at 2865 keV and a 295 ns, 20 + state at 4580 keV in 192Os. Although a number of multi-quasiparticle states arising from prolate and triaxial deformations are expected in these nuclei, the main structures in 192Os can be interpreted as a two-stage alignment of i 13/2 neutrons at oblate deformation, in close analogy with similar structures in the isotones 194Pt and 196Hg. The isomers are attributed to low-energy E2 transitions at the point of the alignment gains. The isomer observed in 191Ir is long-lived (τ m ∼8s) and probably arises from coupling of the h 11/2 proton to the 10 -ν/9/2 - [505]11/2 + [615] prolate configuration that gives rise to long-lived isomers in 190Os and 192Os, although potential-energy-surface calculations indicate that the resultant three-quasiparticle state will be triaxial. | |
dc.publisher | IOP Publishing | |
dc.relation.ispartofseries | Rutherford Centennial Conference on Nuclear Physics | |
dc.rights | Author/s retain copyright | |
dc.source | Journal of Physics: Conference Series 381 (2012) 012060 - Rutherford Centennial Conference on Nuclear Physics, 8–12 August 2011, Manchester, UK | |
dc.source.uri | http://iopscience.iop.org/1742-6596/381/1 | |
dc.subject | Keywords: High spin state; Low energies; Main structure; Osmium isotopes; Triaxial deformation; Alignment; Deformation; Iridium; Isotopes; Nuclear physics; Osmium; Platinum; Isomers | |
dc.title | Isomers and alignments in 191Ir and 192Os | |
dc.type | Conference paper | |
local.description.notes | Imported from ARIES | |
local.description.refereed | Yes | |
dc.date.issued | 2012 | |
local.identifier.absfor | 020202 - Nuclear Physics | |
local.identifier.ariespublication | u4155331xPUB466 | |
local.type.status | Published Version | |
local.contributor.affiliation | Dracoulis, George, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Lane, Gregory, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Byrne, Aidan, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Watanabe, H, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Hughes, Richard, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Palalani, Nyaladzi, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Kondev, Filip G, Argonne National Laboratory | |
local.contributor.affiliation | Carpenter, M P, Argonne National Laboratory | |
local.contributor.affiliation | Seweryniak, D, Argonne National Laboratory | |
local.contributor.affiliation | Zhu, Y, Peking University | |
local.contributor.affiliation | Janssens, R V F, Argonne National Laboratory | |
local.contributor.affiliation | Lister, C J, Argonne National Laboratory | |
local.contributor.affiliation | Lauritsen, T, Argonne National Laboratory | |
local.contributor.affiliation | Chowdhury, P, University of Massachusetts | |
local.contributor.affiliation | Shi, Yue, Peking University | |
local.contributor.affiliation | Xu, F R, Peking University | |
local.bibliographicCitation.startpage | 6 | |
local.identifier.doi | 10.1088/1742-6596/381/1/012060 | |
dc.date.updated | 2016-02-24T10:39:10Z | |
local.identifier.scopusID | 2-s2.0-84867977522 | |
dcterms.accessRights | Open Access | |
Collections | ANU Research Publications |
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