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The neutron dripline at Z = 4: the case of \(^{13,15}\hbox {Be}\)

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Abstract

We review an extensive study of the beryllium isotopic chain carried out at RIKEN. In particular, we discuss the results on \(^{13,15}\hbox {Be}\), two key isotopes for the understanding of dineutron configurations and decays in \(^{14,16}\hbox {Be}\). In the \(^{13}\)Be case, a detailed analysis of its spectroscopy, including for the first time a well-founded reaction framework and a realistic three-body model of \(^{14}\hbox {Be}\) that incorporates core excitations, confirms the dominant \(\ell =1\) content of the low-lying spectrum. In the \(^{15}\)Be case, the fragmentation of \(^{18}\)C, a priori free of any selection rules that may have precluded the observation of states in previous experiments, has confirmed the only known state at about 1.8 MeV, assigned according to shell-model calculations to a spin-parity \(5/2^+\). Some perspectives of these studies are also given.

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Data Availability Statement

This manuscript has no associated data or the data will not be deposited. [Authors’ comment: Data sharing not applicable to this article as no datasets were generated or analysed during the current study.]

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Acknowledgements

This work has been supported by the European Research Council through the ERC Starting Grant No. MINOS-258567. F.M.M. acknowledges partial support from the Franco-Japanese LIA-International Associated Laboratory for Nuclear Structure Problems as well as the French ANR14-CE33-0022-02 EXPAND.

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Authors and Affiliations

  1. Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191, Gif-sur-Yvette, France

    Anna Corsi

  2. LPC Caen, Normandie Université, ENSICAEN, Université de Caen, CNRS/IN2P3, 14050, Caen, France

    Belén Monteagudo & F. Miguel Marqués

  3. NSCL, East Lansing, USA

    Belén Monteagudo

Authors
  1. Anna Corsi
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  2. Belén Monteagudo
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  3. F. Miguel Marqués
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Correspondence to Anna Corsi.

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Communicated by Nicolas Alamanos.

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Corsi, A., Monteagudo, B. & Marqués, F.M. The neutron dripline at Z = 4: the case of \(^{13,15}\hbox {Be}\). Eur. Phys. J. A 57, 88 (2021). https://doi.org/10.1140/epja/s10050-021-00384-0

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  • DOI: https://doi.org/10.1140/epja/s10050-021-00384-0

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