Study of N=50 gap evolution around Z=32: new structure information for 82Ge

D. Thisse; M. Lebois; D. Verney; S. Jazrawi; P. H. Regan; J. N. Wilson; N. Jovančević; M. Rudigier; R. Canavan; D. Etasse; P. Adsley; A. Algora; M. Babo; K. Belvedere; J. Benito; G. Benzoni; A. Blazhev; A. Boso; S. Bottoni; M. Bunce; R. Chakma; N. Cieplicka-Oryńczak; S. Courtin; M. L. Cortés; P. Davies; C. Delafosse; M. Fallot; B. Fornal; L. Fraile; D. Gjestvang; A. Gottardo; V. Guadilla; R. -B. Gerst; G. Häfner; K. Hauschild; M. Heine; C. Henrich; I. Homm; J. Hommet; F. Ibrahim; Ł. W. Iskra; P. Ivanov; A. Korgul; P. Koseoglou; T. Kröll; T. Kurtukian-Nieto; L. Le Meur; S. Leoni; J. Ljungvall; A. Lopez-Martens; R. Lozeva; I. Matea; K. Miernik; J. Nemer; S. Oberstedt; W. Paulsen; M. Piersa-Silkowska; W. Poklepa; Y. Popovitch; C. Porzio; L. Qi; D. Ralet; D. Reygadas-Tello; K. Rezynkina; V. Sánchez-Tembleque; S. Siem; C. Schmitt; P. -A. Söderström; K. Solak; C. Sürder; G. Tocabens; V. Vedia; N. Warr; B. Wasilewska; J. Wiederhold; M. Yavahchova; F. Zeiser; S. Ziliani

doi:10.1140/epja/s10050-023-01051-2

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Study of N=50 gap evolution around Z=32: new structure information for 82Ge

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Study of N=50 gap evolution around Z=32: new structure information for 82Ge

D. Thisse, M. Lebois, D. Verney, S. Jazrawi, P. H. Regan, J. N. Wilson, N. Jovančević, M. Rudigier, R. Canavan, D. Etasse, …

The European Physical Journal A, Vol.59(7)

11/07/2023

DOI: https://doi.org/10.1140/epja/s10050-023-01051-2

Abstract

Hadrons

Heavy Ions

Nuclear Fusion

Particle and Nuclear Physics

Physics and Astronomy

Regular Article - Experimental Physics

Nuclear Physics

Physics

Medium spin states of light N = 50 isotones have been populated using fast neutron-induced fission of 232Th. Online prompt γ spectroscopy has been performed using the hybrid γ spectrometer ν-Ball coupled to the LICORNE directional neutron source at the ALTO facility of IJCLab. Medium spin states of the neutron-rich nucleus 82Ge have been investigated using γ -γ and γ -γ -γ coincidence data to exploit the resolving power of ν-Ball. Two new transitions were assigned to this nucleus and a new level was placed in the level scheme. We tentatively assigned to this new state a (7+) spin-parity, which is interpreted as a new N = 50 core breaking state. This provides further insight into the energy evolution of the N = 50 shell gap toward 78Ni.

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Title: Study of N=50 gap evolution around Z=32: new structure information for 82Ge
Creators: D. Thisse - University of Paris-Saclay
M. Lebois - University of Paris-Saclay
D. Verney - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
S. Jazrawi - National Physical Laboratory
P. H. Regan - National Physical Laboratory
J. N. Wilson - University of Paris-Saclay
N. Jovančević - University of Novi Sad
M. Rudigier - University of Surrey
R. Canavan - University of Surrey
D. Etasse - Université de Caen Normandie
P. Adsley - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
A. Algora - Instituto de Física Corpuscular
M. Babo - University of Paris-Saclay
K. Belvedere - University of Surrey
J. Benito - Universidad Complutense de Madrid
G. Benzoni - Istituto Nazionale di Fisica Nucleare
A. Blazhev - University of Cologne
A. Boso - National Physical Laboratory
S. Bottoni - Istituto Nazionale di Fisica Nucleare
M. Bunce - National Physical Laboratory
R. Chakma - University of Paris-Saclay
N. Cieplicka-Oryńczak - Institute of Nuclear Physics, Polish Academy of Sciences
S. Courtin - Hubert Curien Pluridisciplinary Institute
M. L. Cortés - RIKEN Nishina Center
P. Davies - University of Manchester
C. Delafosse - University of Paris-Saclay
M. Fallot - IMT Atlantique
B. Fornal - Institute of Nuclear Physics, Polish Academy of Sciences
L. Fraile - Universidad Complutense de Madrid
D. Gjestvang - University of Oslo
A. Gottardo - Legnaro National Laboratories
V. Guadilla - Universitat de València
R. -B. Gerst - University of Cologne
G. Häfner - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
K. Hauschild - University of Paris-Saclay
M. Heine - Hubert Curien Pluridisciplinary Institute
C. Henrich - TU Darmstadt
I. Homm - TU Darmstadt
J. Hommet - Université de Caen Normandie
F. Ibrahim - University of Paris-Saclay
Ł. W. Iskra - Institute of Nuclear Physics, Polish Academy of Sciences
P. Ivanov - National Physical Laboratory
A. Korgul - University of Warsaw
P. Koseoglou - GSI Helmholtz Centre for Heavy Ion Research
T. Kröll - TU Darmstadt
T. Kurtukian-Nieto - University of Bordeaux
L. Le Meur - IMT Atlantique
S. Leoni - Istituto Nazionale di Fisica Nucleare
J. Ljungvall - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
A. Lopez-Martens - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
R. Lozeva - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
I. Matea - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
K. Miernik - University of Warsaw
J. Nemer - University of Paris-Saclay
S. Oberstedt - European Commission
W. Paulsen - University of Oslo
M. Piersa-Silkowska - University of Warsaw
W. Poklepa - University of Warsaw
Y. Popovitch - University of Paris-Saclay
C. Porzio - TRIUMF
L. Qi - University of Paris-Saclay
D. Ralet - GANIL
D. Reygadas-Tello - University of Brighton
K. Rezynkina - KU Leuven
V. Sánchez-Tembleque - Universidad Complutense de Madrid
S. Siem - University of Oslo
C. Schmitt - Hubert Curien Pluridisciplinary Institute
P. -A. Söderström - Extreme Light Infrastructure - Nuclear Physics
K. Solak - University of Warsaw
C. Sürder - TU Darmstadt
G. Tocabens - University of Paris-Saclay
V. Vedia - Universidad Complutense de Madrid
N. Warr - University of Cologne
B. Wasilewska - Institute of Nuclear Physics, Polish Academy of Sciences
J. Wiederhold - Technical University of Darmstadt
M. Yavahchova - Institute for Nuclear Research and Nuclear Energy
F. Zeiser - University of Oslo
S. Ziliani - Istituto Nazionale di Fisica Nucleare
Publication Details: The European Physical Journal A, Vol.59(7)
Publisher: Springer Berlin Heidelberg
Date published: 11/07/2023
Grants: University of Surrey (United Kingdom, Guildford)
ST/G000697/1, Science and Technology Facilities Council (United Kingdom, Swindon) - STFC
ST/P005314, Science and Technology Facilities Council (United Kingdom, Swindon) - STFC
ST/P003982/1, Science and Technology Facilities Council (United Kingdom, Swindon) - STFC
ST/L005743/1, Science and Technology Facilities Council (United Kingdom, Swindon) - STFC
European Nuclear Science and Application Research 2, 654002, European Union (Belgium, Brussels) - EU
2020/39/B/ST2/02346, National Science Center (Poland, Krakow) - NCN
NuSTAR.DA 05P15RDFN1, Federal Ministry of Education and Research (Germany, Bonn) - BMBF
Grant note: We would like to thank the operators of the ALTO facility for providing us with reliable beams used in the experiments. We would like to express our profound gratitude to the FASTER collaboration for their strong technical support over the course of the campaign. We would like to acknowledge the support of the GAMMA-POOL and the LOANPOOL for the loan of the Clovers and Phase I germanium detectors. We also acknowledge the FATIMA collaboration for the loan of their LaBr₃ crystals. G. Häfner and R. Lozeva acknowledge support from the IDEX-API grant. A. Blazhev, R.-B. Gerst and N. Warr are supported by the DFG under Grant No.BL 1513/1-1. The research leading to these results has received funding from the European Union’s HORIZON2020 Program under grant agreement No.654002. P.-A. Söderström, P. Koseoglou, J. Wiederhold, M. Rudigier, C. Henrich, I. Homm, C. Sürder and T. Kröll acknowledge the support from BMBF in Germany under grant NuSTAR.DA 05P15RDFN1. P.-A. Söderström acknowledges the contract PN 23 21 01 06 sponsored by the Romanian Ministry of Research, Innovation and Digitalization. A. Korgul acknowledges the Polish National Science Center under Grant No.2020/39/B/ST2/02346 that partially funded this work. L. Iskra acknolegdes the Polish National Science Centre, Poland, under research project No.2020/39/D/ST2/03510. This work is partially supported via the UK STFC UK Nuclear Data Network, UK STFC (grants ST/G000697/1, ST/P005314, ST/P003982/1 and ST/L005743/1) (PHR) and the University of Surrey Marion Redfearn Trust (RCL). P.-H. Regan, M. Bunce, A. Boso and P. Ivanov acknowledge support from the UK Department of Business, Energy and Industrial Strategy (BEIS) via the National Measurement System.
Identifiers: 99785748102346
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. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
Academic Unit: School of Maths and Physics
Language: English
Resource Type: Journal article

Study of N=50 gap evolution around Z=32: new structure information for 82Ge

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