Interpretation of metastable states in the N>70 Zr region

F. Browne; P. M. Walker; A. M. Bruce; T. Sumikama; Zs Podolyák; I. Nishizuka; P. H. Regan; S. Nishimura; P. Doornenbal; J. G. Li; G. Lorusso; P.-A. Söderström; H. Watanabe; F. R. Xu; R. Daido; Z. Patel; S. Rice; Z. Y. Xu; A. Yagi; H. Baba; L. Sinclair; N. Chiga; J. Wu; F. Didierjean; Y. Fang; N. Fukuda; G. Gey; E. Ideguchi; N. Inabe; T. Isobe; D. Kameda; I. Kojouharov; N. Kurz; T. Kubo; S. Lalkovski; Z. Li; R. Lozeva; N. Nishibata; A. Odahara; O. J. Roberts; H. Sakurai; H. Schaffner; G. S. Simpson; H. Suzuki; H. Takeda; M. Tanaka; J. Taprogge; V. Werner; O. Wieland

doi:10.1140/epja/s10050-023-01103-7

Back

Interpretation of metastable states in the N>70 Zr region

Journal article

Open access

Peer reviewed

Interpretation of metastable states in the N>70 Zr region

F. Browne, P. M. Walker, A. M. Bruce, T. Sumikama, Zs Podolyák, I. Nishizuka, P. H. Regan, S. Nishimura, P. Doornenbal, J. G. Li, …

The European Physical Journal A, Vol.59(9), pp.22-28

08/09/2023

DOI: https://doi.org/10.1140/epja/s10050-023-01103-7

Abstract

Hadrons

Heavy Ions

Nuclear Fusion

Particle and Nuclear Physics

Physics and Astronomy

Regular Article - Experimental Physics

Nuclear Physics

Physics

Isomeric states were observed in nuclei produced in an experiment at the RIKEN Nishina Center Radioactive Isotope Beam Factory following the in-flight fission of a 345 MeV/nucleon 238 U beam. Isomers reported in nuclei spanning a predicted prolate-oblate shape change boundary, 111 Zr ( E = 283.1 keV; τ = 0.326(63) μs), 112Nb (E = 44.2 keV; τ = 0.094(26) μs), 113 Nb (E = 135.4 keV; τ = 0.846(80) μs), and 115Mo (E = 198.6 keV; τ = 63(4) μs), are compared to potential-energy surface calculations which gave a selection of low-lying configurations for each nucleus. Tentative assignments of ground and excited states were made based on energy similarities to the calculations, reduced transition probabilities of the decays, and constraints of transition multipolarities from γ-ray coincidence measurements. These assignments are suggestive of significant deformation being persistent for N > 70 in this region. In addition, isomers in 108Nb, 109Nb, 113Tc, 117Ru, 119Ru, 120Rh, and 122Rh, not spanning the prolate-oblate transition discussed, are presented.

Files and links (1)

pdf

Interpretation of metastable states - AAM697.07 kBDownload View

Author's Accepted Manuscript Open Access

Metrics

8 File views/ downloads

41 Record Views

Details

Title: Interpretation of metastable states in the N>70 Zr region
Creators: F. Browne - RIKEN Nishina Center
P. M. Walker - University of Surrey, School of Maths and Physics
A. M. Bruce - University of Brighton
T. Sumikama - RIKEN Nishina Center
Zs Podolyák - University of Surrey, School of Maths and Physics
I. Nishizuka - Tohoku University
P. H. Regan - University of Surrey, School of Maths and Physics
S. Nishimura - RIKEN Nishina Center
P. Doornenbal - RIKEN Nishina Center
J. G. Li - Peking University
G. Lorusso - University of Surrey
P.-A. Söderström - RIKEN Nishina Center
H. Watanabe - Beihang University
F. R. Xu - Peking University
R. Daido - Osaka University
Z. Patel - University of Surrey
S. Rice - University of Surrey
Z. Y. Xu - The University of Tokyo
A. Yagi - Osaka University
H. Baba - RIKEN Nishina Center
L. Sinclair - RIKEN Nishina Center
N. Chiga - RIKEN Nishina Center
J. Wu - Peking University
F. Didierjean - University of Strasbourg
Y. Fang - Osaka University
N. Fukuda - RIKEN Nishina Center
G. Gey - Université Grenoble Alpes
E. Ideguchi - Osaka University
N. Inabe - RIKEN Nishina Center
T. Isobe - RIKEN Nishina Center
D. Kameda - RIKEN Nishina Center
I. Kojouharov - GSI Helmholtz Centre for Heavy Ion Research
N. Kurz - GSI Helmholtz Centre for Heavy Ion Research
T. Kubo - RIKEN Nishina Center
S. Lalkovski - Sofia University "St. Kliment Ohridski"
Z. Li - Peking University
R. Lozeva - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
N. Nishibata - Osaka University
A. Odahara - Osaka University
O. J. Roberts - University of Brighton
H. Sakurai - RIKEN Nishina Center
H. Schaffner - GSI Helmholtz Centre for Heavy Ion Research
G. S. Simpson - Université Grenoble Alpes
H. Suzuki - RIKEN Nishina Center
H. Takeda - RIKEN Nishina Center
M. Tanaka - Osaka University
J. Taprogge - RIKEN Nishina Center
V. Werner - TU Darmstadt
O. Wieland - INFN Sezione di Milano
Publication Details: The European Physical Journal A, Vol.59(9), pp.22-28
Publisher: Springer
Date published: 08/09/2023
Date accepted: 24/07/2023
Grants: ST/J000051/1, Science and Technology Facilities Council (United Kingdom, Swindon) - STFC
KAKENHI, 26800117, Japan Society for the Promotion of Science (United Kingdom, London) - JSPS
KAKENHI, 25247045, Japan Society for the Promotion of Science (United Kingdom, London) - JSPS
ST/J000132/1, Science and Technology Facilities Council (United Kingdom, Swindon) - STFC
ST/K502431/1, Science and Technology Facilities Council (United Kingdom, Swindon) - STFC
23·01752, Japan Society for the Promotion of Science (United Kingdom, London) - JSPS
RIKEN (Japan, Wako)
DE-FG02-91ER-40609, United States Department of Energy (United States, Washington) - DOE
05P12RDFN8, Federal Ministry of Education and Research (Germany, Bonn) - BMBF
FPA2009-13377-C02, Spanish Ministry of Science and Innovation
FPA2011-29854-C04, Spanish Ministry of Science and Innovation
Grant note: This work was supported by JSPS KAKENHI Grant nos. 26800117 and 25247045. UK authors were supported by STFC Grant nos. ST/J000132/1, ST/J000051/1 and ST/K502431/1. P.H.R. acknowledges support from the UK National Measurement Office. P.-A.S. was financed by JSPS Grant no. 23 01752 and the RIKEN Foreign Postdoctoral Researcher Program. V.W. was supported by DOE Grant no. DE-FG02-91ER-40609 and the German BMBF Grant No. 05P12RDFN8. J.T. was financed by Spanish Ministerio de Ciencia e Innovación under Contract Nos. FPA2009-13377-C02 and FPA2011-29854-C04. J.G.L and F.R.X acknowledge the National Natural Science Foundation of China under Grants no. 12205340, 11835001, 11921006 and 12035001. We acknowledge the EUROBALL Owners Committee for the loan of germanium detectors and the PreSpec Collaboration for the readout electronics of the cluster detectors.
Identifiers: 99818464402346
Copyright: © The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Communicated by Wolfram Korten.
Academic Unit: School of Maths and Physics
Language: English
Resource Type: Journal article

Interpretation of metastable states in the N>70 Zr region

Abstract

Files and links (1)

Metrics

Details

Usage Policy