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The shape of the Tz...
The shape of the Tz = +1 nucleus 94Pd and the role of proton-neutron interactions on the structure of its excited states
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- Yaneva, A. (författare)
- Institut für Kernphysik der Universität zu Köln, D-50937 Köln, Germany; GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstr. 1, 64291 Darmstadt, Germany, Planckstr. 1
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- Das, Biswajit (författare)
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstr. 1, 64291 Darmstadt, Germany, Planckstr. 1; KTH Royal Institute of Technology, Stockholm, Sweden
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- Cederwall, Bo, 1964- (författare)
- KTH,Kärnvetenskap och kärnteknik
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- Aktas, Özge (författare)
- KTH,Kärnvetenskap och kärnteknik
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- Zimba, G. (författare)
- University of Jyväskylä, Seminaarinkatu 15, 40014 Jyväskylän yliopisto, Finland, Seminaarinkatu 15, Jyväskylän yliopisto
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Institut für Kernphysik der Universität zu Köln, D-50937 Köln, Germany; GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstr 1, 64291 Darmstadt, Germany, Planckstr. 1 GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstr. 1, 64291 Darmstadt, Germany, Planckstr. 1; KTH Royal Institute of Technology, Stockholm, Sweden (creator_code:org_t)
- Elsevier BV, 2024
- 2024
- Engelska.
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Ingår i: Physics Letters B. - : Elsevier BV. - 0370-2693 .- 1873-2445. ; 855
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Reduced transition probabilities have been extracted between excited, yrast states in the N=Z+2 nucleus 94Pd. The transitions of interest were observed following decays of the Iπ=14+, Ex=2129-keV isomeric state, which was populated following the projectile fragmentation of a 124Xe primary beam at the GSI Helmholtzzentrum für Schwerionenforschung accelerator facility as part of FAIR Phase-0. Experimental information regarding the reduced E2 transition strengths for the decays of the yrast 8+ and 6+ states was determined following isomer-delayed Eγ1−Eγ2−△T2,1 coincidence method, using the LaBr3(Ce)-based FATIMA fast-timing coincidence gamma-ray array, which allowed direct determination of lifetimes of states in 94Pd using the Generalized Centroid Difference (GCD) method. The experimental value for the half-life of the yrast 8+ state of 755(106) ps results in a reduced transition probability of B(E2:8→+6+) = 205−25+34 e2 fm4, which enables a precise verification of shell-model calculations for this unique system, lying directly between the N=Z line and the N=50 neutron shell closure. The determined B(E2) value provides an insight into the purity of (g9/2)n configurations in competition with admixtures from excitations between the (lower) N=3pf and (higher) N=4gds orbitals for the first time. The results indicate weak collectivity expected for near-zero quadrupole deformation and an increasing importance of the T=0 proton-neutron interaction at N=48.
Ämnesord
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Nyckelord
- Fast-timing γ-ray coincidences
- Isovector vs. isoscalar pairing
- pn interaction
- Shell model
- γ spectroscopy
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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