First lifetime investigations of N > 82 iodine isotopes: The quest for collectivity

G. Haefner; R. Lozeva; S. M. Collins; P. H. Regan; H. Naidja; M. Lebois; N. Jovancevic; D. Thisse; D. Etasse; R. L. Canavan; M. Rudigier; J. N. Wilson; E. Adamska; P. Adsley; A. Algora; M. Babo; K. Belvedere; J. Benito; G. Benzoni; A. Boso; A. Blazhev; S. Bottoni; M. Bunce; R. Chakma; N. Cieplicka-Orynczak; M. L. Cortes; P. J. Davies; C. Delafosse; M. Fallot; L. M. Fraile; R-B Gerst; D. Gjestvang; Guadilla; K. Hauschild; C. Henrich; Homm; F. Ibrahim; L. W. Iskra; S. Jazwari; A. Korgul; P. Koseoglou; Th Kroell; T. Kurtukian-Nieto; L. Le-meur; S. Leoni; J. Ljungvall; A. Lopez-Martens; L. Matthieu; K. Miernik; J. Nemer; S. Oberstedt; W. Paulsen; M. Piersa-Silkowska; Y. Popovitch; C. Porzio; L. Qi; D. Ralet; D. Reygadas Tello; K. Rezynkina; Sanchez-Tembleque; C. Schmitt; P-A Soederstroem; C. Suerder; G. Tocabens; V. Vedia; D. Verney; N. Warr; B. Wasilewska; J. Wiederhold; M. S. Yavahchova; F. Zeiser; S. Ziliani

doi:10.1103/PhysRevC.104.014316

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First lifetime investigations of N > 82 iodine isotopes: The quest for collectivity

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First lifetime investigations of N > 82 iodine isotopes: The quest for collectivity

G. Haefner, R. Lozeva, S. M. Collins, P. H. Regan, H. Naidja, M. Lebois, N. Jovancevic, D. Thisse, D. Etasse, R. L. Canavan, …

Physical Review C, Vol.104(1), 014316

19/07/2021

DOI: https://doi.org/10.1103/PhysRevC.104.014316

Abstract

Electromagnetic transitions

Fission

Lifetimes & widths

Nuclear structure & decays

90 ≤ A ≤ 149

Nuclear Physics

We report on spectroscopic information and lifetime measurements in the neutron-rich I-135,I-137,I-139 isotopes. This is the first lifetime data on iodine isotopes beyond N = 82. Excited states were populated in fast neutron-induced fission of U-238 at the ALTO facility of IJCLab with the LICORNE neutron source and detected using the hybrid nu-ball spectrometer. The level schemes of the I-135,I-137,I-139 isotopes are revised in terms of excited states with up to maximum spin-parity of (33/2(+)), populated for the first time in fast neutron-induced fission. We provide first results on the lifetimes of the (9/2(1)(+)) and (13/2(1)(+)) states in I-137 and I-139, and the (17/2(1)(+)) state in 137I. In addition, we give upper lifetime limits for the (11/2(1)(+)) states in I135-139, the (15/2(1)(+)) state in I-137, the (17/2(1)(+)) state in I-139, and reexamine the (29/2(1)(+)) state in I-137. The isomeric data in I-13(5) are reinvestigated, such as the previously known (15/2(1)(+)) and (23/21) isomers with T-1/2 of 1.64(14) and 4.6(7) ns, respectively, as obtained in this work. The new spectroscopic information is compared to that from spontaneous or thermal-neutron induced fission and discussed in the context of large scale shell-model (LSSM) calculations for the region beyond Sn-132, indicating the behavior of collectivity for the three valence-proton iodine chain with N = 82, 84, 86.

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Title: First lifetime investigations of N > 82 iodine isotopes: The quest for collectivity
Creators: G. Haefner - University of Paris-Saclay
R. Lozeva - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
S. M. Collins - University of Surrey, School of Maths and Physics
P. H. Regan - University of Surrey, School of Maths and Physics
H. Naidja - Univ Constantine 1, LPMS, Route Ain El Bey, DZ-25000 Constantine, Algeria
M. Lebois - Univ Paris Saclay, IJCLab, CNRS IN2P3, F-91405 Orsay, France
N. Jovancevic - Univ Paris Saclay, IJCLab, CNRS IN2P3, F-91405 Orsay, France
D. Thisse - Univ Paris Saclay, IJCLab, CNRS IN2P3, F-91405 Orsay, France
D. Etasse - LPC Caen, CNRS IN2P3, F-14000 Caen, France
R. L. Canavan - University of Surrey, School of Maths and Physics
M. Rudigier - University of Surrey
J. N. Wilson - Univ Paris Saclay, IJCLab, CNRS IN2P3, F-91405 Orsay, France
E. Adamska - Univ Warsaw, Fac Phys, PL-02093 Warsaw, Poland
P. Adsley - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
A. Algora - Univ Valencia, CSIC, Inst Fis Corpuscular, E-46071 Valencia, Spain
M. Babo - Univ Paris Saclay, IJCLab, CNRS IN2P3, F-91405 Orsay, France
K. Belvedere - Univ Surrey, Dept Phys, Guildford GU2 7XH, England
J. Benito - Universitat de València
G. Benzoni - INFN Sezione di Milano
A. Boso - Natl Phys Lab, Teddington TW11 0LW, Middx, England
A. Blazhev - University of Cologne
S. Bottoni - GSI Helmholtz Centre for Heavy Ion Research
M. Bunce - Natl Phys Lab, Teddington TW11 0LW, Middx, England
R. Chakma - Univ Paris Saclay, IJCLab, CNRS IN2P3, F-91405 Orsay, France
N. Cieplicka-Orynczak - Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland
M. L. Cortes - RIKEN, Nishina Ctr, 2-1 Hirosawa, Wako, Saitama 3510198, Japan
P. J. Davies - Univ Manchester, Dept Phys, Oxford Rd, Manchester M13 9PL, Lancs, England
C. Delafosse - Univ Paris Saclay, IJCLab, CNRS IN2P3, F-91405 Orsay, France
M. Fallot - Univ Nantes, CNRS IN2P3, Ecole Mines, Subatech, F-44307 Nantes, France
L. M. Fraile - Univ Complutense Madrid, Grp Fis Nucl, E-28040 Madrid, Spain
R-B Gerst - Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany
D. Gjestvang - Univ Oslo, Dept Phys, NO-0316 Oslo, Norway
Guadilla - Nantes Université
K. Hauschild - Univ Paris Saclay, IJCLab, CNRS IN2P3, F-91405 Orsay, France
C. Henrich - Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany
Homm - Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany
F. Ibrahim - Univ Paris Saclay, IJCLab, CNRS IN2P3, F-91405 Orsay, France
L. W. Iskra - Iniversita Milano, Dipartimento Fis, I-20133 Milan, Italy
S. Jazwari - Univ Surrey, Dept Phys, Guildford GU2 7XH, England
A. Korgul - Univ Warsaw, Fac Phys, PL-02093 Warsaw, Poland
P. Koseoglou - University of Surrey
Th Kroell - Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany
T. Kurtukian-Nieto - Univ Bordeaux, CNRS IN2P3, CENBG Bordeaux, BP 120, F-33175 Gradignan, France
L. Le-meur - Univ Nantes, CNRS IN2P3, Ecole Mines, Subatech, F-44307 Nantes, France
S. Leoni - GSI Helmholtz Centre for Heavy Ion Research
J. Ljungvall - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
A. Lopez-Martens - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
L. Matthieu - Institut National de Physique Nucléaire et de Physique des Particules
K. Miernik - Univ Warsaw, Fac Phys, PL-02093 Warsaw, Poland
J. Nemer - Univ Paris Saclay, IJCLab, CNRS IN2P3, F-91405 Orsay, France
S. Oberstedt - European Commiss, Joint Res Ctr JRC, BE-2440 Geel, Belgium
W. Paulsen - Univ Oslo, Dept Phys, NO-0316 Oslo, Norway
M. Piersa-Silkowska - University of Warsaw
Y. Popovitch - Univ Paris Saclay, IJCLab, CNRS IN2P3, F-91405 Orsay, France
C. Porzio - GSI Helmholtz Centre for Heavy Ion Research
L. Qi - Univ Paris Saclay, IJCLab, CNRS IN2P3, F-91405 Orsay, France
D. Ralet - GANIL
D. Reygadas Tello - Inst Laue Langevin, F-38042 Grenoble, France
K. Rezynkina - University of Surrey
Sanchez-Tembleque - Univ Complutense Madrid, Grp Fis Nucl, E-28040 Madrid, Spain
C. Schmitt - Univ Strasbourg, IPHC, CNRS IN2P3, F-67037 Strasbourg, France
P-A Soederstroem - Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany
C. Suerder - Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany
G. Tocabens - Univ Paris Saclay, IJCLab, CNRS IN2P3, F-91405 Orsay, France
V. Vedia - Univ Complutense Madrid, Grp Fis Nucl, E-28040 Madrid, Spain
D. Verney - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
N. Warr - Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany
B. Wasilewska - Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland
J. Wiederhold - Universitat de València
M. S. Yavahchova - Bulgarian Acad Sci BAS, Inst Nucl Res & Nucl Energy, BG-1784 Sofia, Bulgaria
F. Zeiser - Univ Oslo, Dept Phys, NO-0316 Oslo, Norway
S. Ziliani - Iniversita Milano, Dipartimento Fis, I-20133 Milan, Italy
Publication Details: Physical Review C, Vol.104(1), 014316
Publisher: American Physical Society
Number of pages: 18
Date published: 19/07/2021
Date accepted: 25/06/2021
Grants: Department for Business, Energy and Industrial Strategy (United Kingdom, London) - BEIS
ST/P005314, Science and Technology Facilities Council (United Kingdom, Swindon) - STFC
BL 1513/1-1 / DFG, Deutsche Forschungsgemeinschaft (Germany, Bonn) - DFG
263030, The Research Council of Norway (Norway, Oslo)
FPA2015-65035-P, Ministry of Economy, Industry and Competitiveness (Spain, Madrid) - MINECO
RTI2018-098868-B-I00, Ministry of Economy, Industry and Competitiveness (Spain, Madrid) - MINECO
ST/L005743/1, Science and Technology Facilities Council (United Kingdom, Swindon) - STFC
05P15RDFN1, Federal Ministry of Education and Research (Germany, Bonn) - BMBF
05P19PKFNA, Federal Ministry of Education and Research (Germany, Bonn) - BMBF
European Nuclear Science and Application Research 2, 654002, European Union (Belgium, Brussels) - EU
Grant note: The authors would like to thank the operators of the ALTO facility for providing the reliable beams used during the experiment. Additionally, we thank the FASTER Collaboration for the technical support given. GAMMA-POOL and LOANPOOL are acknowledged for loaning the clover and Phase-I HPGe detectors. The FATIMA Collaboration is acknowledged for loaning the LaBr3(Ce) detectors. Some of the coauthors of this work were supported by the STFC UK Nuclear Data Network, the STFC (Grants No. ST/L005743/1 and No. ST/P005314), the Marion Redfearn Trust, BMBF (NUSTAR.DE Grants No. 05P15RDFN1 and No. 05P19PKFNA), and MINECO Grants No. FPA2015-65035-P and No. RTI2018-098868-B-I00. Part of the collaboration has received funding from the European Union's HORIZON 2020 Program under Grant Agreement No. 654002. G.H. and R.L. acknowledge support from the IDEX-API grant. P.H.R., S.M.C., M.B., and A.B. acknowledge support from the UK Government Department of BEIS via the National Measurement System, and the STFC consolidated grant. A.B., R.-B.G., and N.W. are supported by the DFG under Grant No. BL 1513/1-1. F.Z. received support from the Research Council of Norway under Contract No. 263030. M.P.-S. received funding from the Polish National Science Centre under Grants No. 2019/33/N/ST2/03023 and 2020/36/T/ST2/00547. A.K. was partially funded by Grant No. 2020/39/B/ST2/02346.
Identifiers: 99703266602346
Academic Unit: School of Maths and Physics
Language: English
Resource Type: Journal article

First lifetime investigations of N > 82 iodine isotopes: The quest for collectivity

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