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Title: Lifetime measurements in the even-even Cd 102 108 isotopes

Abstract

The heaviest T z = 0 doubly-magic nucleus, Sn 100 , and the neighboring nuclei offer unique opportunities to investigate the properties of nuclear interaction. For instance, the structure of light-Sn nuclei has been shown to be affected by the delicate balance between nuclear-interaction components, such as pairing and quadrupole correlations. From Cd to Te, many common features and phenomena have been observed experimentally along the isotopic chains, leading to theoretical studies devoted to a more general and comprehensive study of the region. In this context, having only two proton holes in the Z = 50 shell, the Cd isotopes are expected to present properties similar to those found in the Sn isotopic chain. The aim of this work was to measure lifetimes of excited states in neutron-deficient nuclei in the vicinity of Sn 100 . Here, the neutron-deficient nuclei in the N Z 50 region were populated using a multinucleon transfer reaction with a Cd 106 beam and a Mo 92 target. The beamlike products were identified by the VAMOS + + spectrometer, while the γ rays were detected using the AGATA array. Lifetimes of excited states were determined using the recoil distance Doppler-shift method, employing the Cologne differential plunger. Lifetimes of low-lying states were measured in the even-mass Cd 102 108 isotopes. In particular, multiple states with excitation energy up to 3 MeV, belonging to various bands, were populated in Cd 106 via inelastic scattering. The transition strengths corresponding to the measured lifetimes were compared with those resulting from state-of-the-art beyond-mean-field calculations using the symmetry-conserving configuration-mixing approach. Conclusions: Despite the similarities in the electromagnetic properties of the low-lying states, there is a fundamental structural difference between the ground-state bands in the Z = 48 and Z = 50 isotopes. The comparison between experimental and theoretical results revealed a rotational character of the Cd nuclei, which have prolate-deformed ground states with β 2 0.2 . At this deformation Z = 48 becomes a closed-shell configuration, which is favored with respect to the spherical one.

Authors:
ORCiD logo [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [9];  [10];  [9];  [11];  [12];  [7];  [13];  [14];  [7];  [15];  [16];  [17] more »;  [18];  [9];  [15];  [14];  [2];  [19];  [20];  [21];  [22];  [2];  [23];  [24];  [25];  [26];  [18];  [21];  [27] « less
  1. Univ. Paris-Saclay, Gif-sur-Yvette (France); National Inst. of Nuclear Physics (INFN), Legnaro (Italy); Univ. di Padova (Italy)
  2. National Inst. of Nuclear Physics (INFN), Legnaro (Italy)
  3. National Inst. of Nuclear Physics (INFN), Legnaro (Italy); Univ. di Padova (Italy); National Inst. of Nuclear Physics (INFN), Padova (Italy)
  4. Univ. Autonoma de Madrid (Spain)
  5. National Inst. of Nuclear Physics (INFN), Padova (Italy)
  6. Istituto Nazionale di Fisica Nucleare (INFN), Milano (Italy)
  7. Univ. of Cologne (Germany)
  8. Istituto Nazionale di Fisica Nucleare (INFN), Milano (Italy); Polish Academy of Sciences (PAS), Krakow (Poland)
  9. Grand Accelerateur National d'Ions Lourds (GANIL), Caen (France)
  10. Istituto Nazionale di Fisica Nucleare (INFN), Milano (Italy); Univ. di Milano (Italy)
  11. Universidad de Salamanca (Spain); Stockholm Univ. (Sweden)
  12. Ömer Halisdemir Üniversitesi, Niğde (Turkey)
  13. Consejo Superior de Investigaciones Cientificas (CSIC), Valencia (Spain). Univ. Politecnica de Valencia (CSIC-UPV)
  14. Universite Paris-Saclay, Orsay (France)
  15. KTH Royal Inst. of Technology, Stockholm (Sweden)
  16. National Inst. of Nuclear Physics (INFN), Legnaro (Italy); Univ. of Warsaw (Poland)
  17. Univ. di Padova (Italy); National Inst. of Nuclear Physics (INFN), Padova (Italy); Technische Univ. Darmstadt (Germany)
  18. Institute of Nuclear Research (ATOMKI), Debrecen (Hungary)
  19. Univ. di Padova (Italy); National Inst. of Nuclear Physics (INFN), Padova (Italy)
  20. Grand Accelerateur National d'Ions Lourds (GANIL), Caen (France); Inst. Laue-Langevin (ILL), Grenoble (France)
  21. Ruđer Bošković Institute and University of Zagreb (Croatia)
  22. Univ. of Cologne (Germany); Argonne National Lab. (ANL), Argonne, IL (United States)
  23. Uppsala Univ. (Sweden)
  24. Univ. of Warsaw (Poland)
  25. Consejo Superior de Investigaciones Cientificas (CSIC), Valencia (Spain). Univ. Politecnica de Valencia (CSIC-UPV); National Inst. of Nuclear Physics (INFN), Legnaro (Italy)
  26. National Inst. of Nuclear Physics (INFN), Legnaro (Italy); Ege Üniversitesi, İzmir (Turkey); Sakarya University (Turkey)
  27. Univ. di Padova (Italy); National Inst. of Nuclear Physics (INFN), Padova (Italy); Joint Inst. for Nuclear Research (JINR), Dubna (Russian Federation)
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP); European Commission (EC); Spanish Ministry of Science and Innovation (MICINN); Swedish Research Council (SRC); Knut and Alice Wallenberg Foundation; Scientific and Technological Research Council of Turkey (TUBITAK); Croatian Science Foundation; Hungarian National Research and Innovation Office (NKFIH); Polish National Science Centre (NCN)
OSTI Identifier:
1833856
Grant/Contract Number:  
AC02-06CH11357; 262010; PGC2018-094583-B-I00; 822-2005-3332; 821-2010-6024; 821-2013-2304; 621-2014-5558; 2017-0065; 2005.0184; 114F473; SEV-2014-0398; FPA2017-84756-C4; EEBBI-15-09671; PROMETEO/2019/005; 7194; K128947; PD124717; GINOP-2.3.3-15-2016-00034; 2014-14-M-ST2-00738; 2016-22-MST2-00269; 2017-25-B-ST2-01569
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 104; Journal Issue: 3; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; electromagnetic transitions; lifetimes & widths; nuclear structure & decays; transfer reactions

Citation Formats

Siciliano, M., Valiente-Dobón, J. J., Goasduff, A., Rodríguez, T. R., Bazzacco, D., Benzoni, G., Braunroth, T., Cieplicka-Oryńczak, N., Clément, E., Crespi, F. C. L., de France, G., Doncel, M., Ertürk, S., Fransen, C., Gadea, A., Georgiev, G., Goldkuhle, A., Jakobsson, U., Jaworski, G., John, P. R., Kuti, I., Lemasson, A., Li, H., Lopez-Martens, A., Marchi, T., Mengoni, D., Michelagnoli, C., Mijatović, T., Müller-Gatermann, C., Napoli, D. R., Nyberg, J., Palacz, M., Pérez-Vidal, R. M., Sayği, B., Sohler, D., Szilner, S., and Testov, D. Lifetime measurements in the even-even Cd102–108 isotopes. United States: N. p., 2021. Web. doi:10.1103/physrevc.104.034320.
Siciliano, M., Valiente-Dobón, J. J., Goasduff, A., Rodríguez, T. R., Bazzacco, D., Benzoni, G., Braunroth, T., Cieplicka-Oryńczak, N., Clément, E., Crespi, F. C. L., de France, G., Doncel, M., Ertürk, S., Fransen, C., Gadea, A., Georgiev, G., Goldkuhle, A., Jakobsson, U., Jaworski, G., John, P. R., Kuti, I., Lemasson, A., Li, H., Lopez-Martens, A., Marchi, T., Mengoni, D., Michelagnoli, C., Mijatović, T., Müller-Gatermann, C., Napoli, D. R., Nyberg, J., Palacz, M., Pérez-Vidal, R. M., Sayği, B., Sohler, D., Szilner, S., & Testov, D. Lifetime measurements in the even-even Cd102–108 isotopes. United States. https://doi.org/10.1103/physrevc.104.034320
Siciliano, M., Valiente-Dobón, J. J., Goasduff, A., Rodríguez, T. R., Bazzacco, D., Benzoni, G., Braunroth, T., Cieplicka-Oryńczak, N., Clément, E., Crespi, F. C. L., de France, G., Doncel, M., Ertürk, S., Fransen, C., Gadea, A., Georgiev, G., Goldkuhle, A., Jakobsson, U., Jaworski, G., John, P. R., Kuti, I., Lemasson, A., Li, H., Lopez-Martens, A., Marchi, T., Mengoni, D., Michelagnoli, C., Mijatović, T., Müller-Gatermann, C., Napoli, D. R., Nyberg, J., Palacz, M., Pérez-Vidal, R. M., Sayği, B., Sohler, D., Szilner, S., and Testov, D. Thu . "Lifetime measurements in the even-even Cd102–108 isotopes". United States. https://doi.org/10.1103/physrevc.104.034320. https://www.osti.gov/servlets/purl/1833856.
@article{osti_1833856,
title = {Lifetime measurements in the even-even Cd102–108 isotopes},
author = {Siciliano, M. and Valiente-Dobón, J. J. and Goasduff, A. and Rodríguez, T. R. and Bazzacco, D. and Benzoni, G. and Braunroth, T. and Cieplicka-Oryńczak, N. and Clément, E. and Crespi, F. C. L. and de France, G. and Doncel, M. and Ertürk, S. and Fransen, C. and Gadea, A. and Georgiev, G. and Goldkuhle, A. and Jakobsson, U. and Jaworski, G. and John, P. R. and Kuti, I. and Lemasson, A. and Li, H. and Lopez-Martens, A. and Marchi, T. and Mengoni, D. and Michelagnoli, C. and Mijatović, T. and Müller-Gatermann, C. and Napoli, D. R. and Nyberg, J. and Palacz, M. and Pérez-Vidal, R. M. and Sayği, B. and Sohler, D. and Szilner, S. and Testov, D.},
abstractNote = {The heaviest Tz=0 doubly-magic nucleus, Sn100, and the neighboring nuclei offer unique opportunities to investigate the properties of nuclear interaction. For instance, the structure of light-Sn nuclei has been shown to be affected by the delicate balance between nuclear-interaction components, such as pairing and quadrupole correlations. From Cd to Te, many common features and phenomena have been observed experimentally along the isotopic chains, leading to theoretical studies devoted to a more general and comprehensive study of the region. In this context, having only two proton holes in the Z=50 shell, the Cd isotopes are expected to present properties similar to those found in the Sn isotopic chain. The aim of this work was to measure lifetimes of excited states in neutron-deficient nuclei in the vicinity of Sn100. Here, the neutron-deficient nuclei in the N≈Z≈50 region were populated using a multinucleon transfer reaction with a Cd106 beam and a Mo92 target. The beamlike products were identified by the VAMOS++ spectrometer, while the γ rays were detected using the AGATA array. Lifetimes of excited states were determined using the recoil distance Doppler-shift method, employing the Cologne differential plunger. Lifetimes of low-lying states were measured in the even-mass Cd102–108 isotopes. In particular, multiple states with excitation energy up to ≈3 MeV, belonging to various bands, were populated in Cd106 via inelastic scattering. The transition strengths corresponding to the measured lifetimes were compared with those resulting from state-of-the-art beyond-mean-field calculations using the symmetry-conserving configuration-mixing approach. Conclusions: Despite the similarities in the electromagnetic properties of the low-lying states, there is a fundamental structural difference between the ground-state bands in the Z=48 and Z=50 isotopes. The comparison between experimental and theoretical results revealed a rotational character of the Cd nuclei, which have prolate-deformed ground states with β2≈0.2. At this deformation Z=48 becomes a closed-shell configuration, which is favored with respect to the spherical one.},
doi = {10.1103/physrevc.104.034320},
journal = {Physical Review C},
number = 3,
volume = 104,
place = {United States},
year = {Thu Sep 30 00:00:00 EDT 2021},
month = {Thu Sep 30 00:00:00 EDT 2021}
}

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