Nature Communications (Sep 2023)
Elucidating the nature of the proton radioactivity and branching ratio on the first proton emitter discovered 53mCo
- Luis G. Sarmiento,
- Thomas Roger,
- Jérôme Giovinazzo,
- B. Alex Brown,
- Bertram Blank,
- Dirk Rudolph,
- Anu Kankainen,
- Héctor Alvarez-Pol,
- Alex Arokia Raj,
- Pauline Ascher,
- Michael Block,
- Manuel Caamaño-Fresco,
- Lucia Caceres,
- Laetitia Canete,
- Daniel M. Cox,
- Tommi Eronen,
- Claes Fahlander,
- Beatriz Fernández-Domínguez,
- Ulrika Forsberg,
- Juan Lois-Fuentes,
- Mathias Gerbaux,
- Jürgen Gerl,
- Pavel Golubev,
- Stéphane Grévy,
- Gwen F. Grinyer,
- Tobias Habermann,
- Jani Hakala,
- Ari Jokinen,
- Omar Kamalou,
- Ivan Kojouharov,
- Veli S. Kolhinen,
- Jukka Koponen,
- Nikolaus Kurz,
- Nataša Lalović,
- Christian Lorenz,
- Benoit Mauss,
- Alice Mentana,
- Iain D. Moore,
- Aurora Ortega Moral,
- Julien Pancin,
- Philippos Papadakis,
- Jérôme Pibernat,
- Julien Piot,
- Ilkka Pohjalainen,
- Juuso Reinikainen,
- Sami Rinta-Antila,
- Henning Schaffner,
- Olivier Sorlin,
- Christelle Stodel,
- Jean-Charles Thomas,
- Maud Versteegen,
- Annika Voss
Affiliations
- Luis G. Sarmiento
- Department of Physics, Lund University
- Thomas Roger
- Grand Accélérateur National d’Ions Lourds, CEA/DRF-CNRS/IN2P3, B.P. 55027
- Jérôme Giovinazzo
- Laboratoire de Physique des Deux Infinis de Bordeaux, UMR 5797 CNRS/IN2P3—Université de Bordeaux
- B. Alex Brown
- Department of Physics and Astronomy and the Facility for Rare Isotope Beams, Michigan State University
- Bertram Blank
- Laboratoire de Physique des Deux Infinis de Bordeaux, UMR 5797 CNRS/IN2P3—Université de Bordeaux
- Dirk Rudolph
- Department of Physics, Lund University
- Anu Kankainen
- Accelerator Laboratory, Department of Physics, University of Jyväskylä
- Héctor Alvarez-Pol
- IGFAE - Universidade de Santiago de Compostela
- Alex Arokia Raj
- Instituut voor Kern- en Stralingsfysica, KU Leuven
- Pauline Ascher
- Laboratoire de Physique des Deux Infinis de Bordeaux, UMR 5797 CNRS/IN2P3—Université de Bordeaux
- Michael Block
- GSI Helmholtzzentrum für Schwerionenforschung GmbH
- Manuel Caamaño-Fresco
- IGFAE - Universidade de Santiago de Compostela
- Lucia Caceres
- Grand Accélérateur National d’Ions Lourds, CEA/DRF-CNRS/IN2P3, B.P. 55027
- Laetitia Canete
- Accelerator Laboratory, Department of Physics, University of Jyväskylä
- Daniel M. Cox
- Department of Physics, Lund University
- Tommi Eronen
- Accelerator Laboratory, Department of Physics, University of Jyväskylä
- Claes Fahlander
- Department of Physics, Lund University
- Beatriz Fernández-Domínguez
- IGFAE - Universidade de Santiago de Compostela
- Ulrika Forsberg
- Department of Physics, Lund University
- Juan Lois-Fuentes
- IGFAE - Universidade de Santiago de Compostela
- Mathias Gerbaux
- Laboratoire de Physique des Deux Infinis de Bordeaux, UMR 5797 CNRS/IN2P3—Université de Bordeaux
- Jürgen Gerl
- GSI Helmholtzzentrum für Schwerionenforschung GmbH
- Pavel Golubev
- Department of Physics, Lund University
- Stéphane Grévy
- Laboratoire de Physique des Deux Infinis de Bordeaux, UMR 5797 CNRS/IN2P3—Université de Bordeaux
- Gwen F. Grinyer
- Department of Physics, University of Regina
- Tobias Habermann
- GSI Helmholtzzentrum für Schwerionenforschung GmbH
- Jani Hakala
- Accelerator Laboratory, Department of Physics, University of Jyväskylä
- Ari Jokinen
- Accelerator Laboratory, Department of Physics, University of Jyväskylä
- Omar Kamalou
- Grand Accélérateur National d’Ions Lourds, CEA/DRF-CNRS/IN2P3, B.P. 55027
- Ivan Kojouharov
- GSI Helmholtzzentrum für Schwerionenforschung GmbH
- Veli S. Kolhinen
- Accelerator Laboratory, Department of Physics, University of Jyväskylä
- Jukka Koponen
- Accelerator Laboratory, Department of Physics, University of Jyväskylä
- Nikolaus Kurz
- GSI Helmholtzzentrum für Schwerionenforschung GmbH
- Nataša Lalović
- Department of Physics, Lund University
- Christian Lorenz
- Department of Physics, Lund University
- Benoit Mauss
- RIKEN Nishina Center
- Alice Mentana
- Instituut voor Kern- en Stralingsfysica, KU Leuven
- Iain D. Moore
- Accelerator Laboratory, Department of Physics, University of Jyväskylä
- Aurora Ortega Moral
- Laboratoire de Physique des Deux Infinis de Bordeaux, UMR 5797 CNRS/IN2P3—Université de Bordeaux
- Julien Pancin
- Grand Accélérateur National d’Ions Lourds, CEA/DRF-CNRS/IN2P3, B.P. 55027
- Philippos Papadakis
- Accelerator Laboratory, Department of Physics, University of Jyväskylä
- Jérôme Pibernat
- Laboratoire de Physique des Deux Infinis de Bordeaux, UMR 5797 CNRS/IN2P3—Université de Bordeaux
- Julien Piot
- Grand Accélérateur National d’Ions Lourds, CEA/DRF-CNRS/IN2P3, B.P. 55027
- Ilkka Pohjalainen
- Accelerator Laboratory, Department of Physics, University of Jyväskylä
- Juuso Reinikainen
- Accelerator Laboratory, Department of Physics, University of Jyväskylä
- Sami Rinta-Antila
- Accelerator Laboratory, Department of Physics, University of Jyväskylä
- Henning Schaffner
- GSI Helmholtzzentrum für Schwerionenforschung GmbH
- Olivier Sorlin
- Grand Accélérateur National d’Ions Lourds, CEA/DRF-CNRS/IN2P3, B.P. 55027
- Christelle Stodel
- Grand Accélérateur National d’Ions Lourds, CEA/DRF-CNRS/IN2P3, B.P. 55027
- Jean-Charles Thomas
- Grand Accélérateur National d’Ions Lourds, CEA/DRF-CNRS/IN2P3, B.P. 55027
- Maud Versteegen
- Laboratoire de Physique des Deux Infinis de Bordeaux, UMR 5797 CNRS/IN2P3—Université de Bordeaux
- Annika Voss
- Accelerator Laboratory, Department of Physics, University of Jyväskylä
- DOI
- https://doi.org/10.1038/s41467-023-39389-2
- Journal volume & issue
-
Vol. 14,
no. 1
pp. 1 – 7
Abstract
Abstract The observation of a weak proton-emission branch in the decay of the 3174-keV 53mCo isomeric state marked the discovery of proton radioactivity in atomic nuclei in 1970. Here we show, based on the partial half-lives and the decay energies of the possible proton-emission branches, that the exceptionally high angular momentum barriers, $${{{{{{\mathcal{l}}}}}}}_{{{{{{\rm{p}}}}}}}=9$$ l p = 9 and $${{{{{{\mathcal{l}}}}}}}_{{{{{{\rm{p}}}}}}}=7$$ l p = 7 , play a key role in hindering the proton radioactivity from 53mCo, making them very challenging to observe and calculate. Indeed, experiments had to wait decades for significant advances in accelerator facilities and multi-faceted state-of-the-art decay stations to gain full access to all observables. Combining data taken with the TASISpec decay station at the Accelerator Laboratory of the University of Jyväskylä, Finland, and the ACTAR TPC device on LISE3 at GANIL, France, we measured their branching ratios as bp1 = 1.3(1)% and bp2 = 0.025(4)%. These results were compared to cutting-edge shell-model and barrier penetration calculations. This description reproduces the order of magnitude of the branching ratios and partial half-lives, despite their very small spectroscopic factors.