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Aksyutina Y, Aumann T, Boretzky K, et al. Study of the 14Be continuum: identification and structure of its second 2+ state. Phys Rev Lett. 2013;111(24):242501doi: 10.1103/PhysRevLett.111.242501.
Aksyutina, Y., Aumann, T., Boretzky, K., Borge, M. J., Caesar, C., Chatillon, A., Chulkov, L. V., Cortina-Gil, D., Datta Pramanik, U., Emling, H., Fynbo, H. O., Geissel, H., Heinz, A., Ickert, G., Johansson, H. T., Jonson, B., Kulessa, R., Langer, C., LeBleis, T., Mahata, K., Münzenberg, G., Nilsson, T., Nyman, G., Palit, R., Paschalis, S., Prokopowicz, W., Reifarth, R., Rossi, D., Richter, A., Riisager, K., Schrieder, G., Simon, H., Sümmerer, K., Tengblad, O., Thies, R., Weick, H., & Zhukov, M. V. (2013). Study of the 14Be continuum: identification and structure of its second 2+ state. Physical review letters, 111(24), 242501. https://doi.org/10.1103/PhysRevLett.111.242501
Aksyutina, Yu, et al. "Study of the 14Be continuum: identification and structure of its second 2+ state." Physical review letters vol. 111,24 (2013): 242501. doi: https://doi.org/10.1103/PhysRevLett.111.242501
Aksyutina Y, Aumann T, Boretzky K, Borge MJ, Caesar C, Chatillon A, Chulkov LV, Cortina-Gil D, Datta Pramanik U, Emling H, Fynbo HO, Geissel H, Heinz A, Ickert G, Johansson HT, Jonson B, Kulessa R, Langer C, LeBleis T, Mahata K, Münzenberg G, Nilsson T, Nyman G, Palit R, Paschalis S, Prokopowicz W, Reifarth R, Rossi D, Richter A, Riisager K, Schrieder G, Simon H, Sümmerer K, Tengblad O, Thies R, Weick H, Zhukov MV. Study of the 14Be continuum: identification and structure of its second 2+ state. Phys Rev Lett. 2013 Dec 13;111(24):242501. doi: 10.1103/PhysRevLett.111.242501. Epub 2013 Dec 09. PMID: 24483646.
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Phys Rev Lett. 2013 Dec 13;111(24):242501. doi: 10.1103/PhysRevLett.111.242501. Epub 2013 Dec 09.

Study of the 14Be continuum: identification and structure of its second 2+ state.

Physical review letters

Yu Aksyutina, T Aumann, K Boretzky, M J G Borge, C Caesar, A Chatillon, L V Chulkov, D Cortina-Gil, U Datta Pramanik, H Emling, H O U Fynbo, H Geissel, A Heinz, G Ickert, H T Johansson, B Jonson, R Kulessa, C Langer, T LeBleis, K Mahata, G Münzenberg, T Nilsson, G Nyman, R Palit, S Paschalis, W Prokopowicz, R Reifarth, D Rossi, A Richter, K Riisager, G Schrieder, H Simon, K Sümmerer, O Tengblad, R Thies, H Weick, M V Zhukov

Affiliations

  1. GSI Helmholtzzentrum für Schwerionenforschung GmbH, ExtreMe Matter Institute, EMMI, D-64291 Darmstadt, Germany.
  2. GSI Helmholtzzentrum für Schwerionenforschung GmbH, ExtreMe Matter Institute, EMMI, D-64291 Darmstadt, Germany and Institut für Kernphysik, Technische Universität, D-64289 Darmstadt, Germany.
  3. Instituto de Estructura de la Materia, CSIC, ES-28006 Madrid, Spain.
  4. GSI Helmholtzzentrum für Schwerionenforschung GmbH, ExtreMe Matter Institute, EMMI, D-64291 Darmstadt, Germany and Kurchatov Institute, RU-123182 Moscow, Russia.
  5. Universidade de Santiago de Compostela, ES-15782 Santiago de Compostela, Spain.
  6. Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata IN-700064, India.
  7. Department of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus, Denmark.
  8. Fundamental Fysik, Chalmers Tekniska Högskola, SE-41296 Göteborg, Sweden.
  9. Instytut Fisiki, Uniwersytet Jagello?ski, PL-30-059 Krakóv, Poland.
  10. Institut für Kernphysik, Johann-Wolfgang-Goethe-Universität, D-60486 Frankfurt, Germany.
  11. Institut für Kernphysik, Technische Universität, D-64289 Darmstadt, Germany.
  12. GSI Helmholtzzentrum für Schwerionenforschung GmbH, ExtreMe Matter Institute, EMMI, D-64291 Darmstadt, Germany and Institut für Kernphysik, Johann-Wolfgang-Goethe-Universität, D-60486 Frankfurt, Germany.

PMID: 24483646 DOI: 10.1103/PhysRevLett.111.242501

Abstract

The coupling between bound quantum states and those in the continuum is of high theoretical interest. Experimental studies of bound drip-line nuclei provide ideal testing grounds for such investigations since they, due to the feeble binding energy of their valence particles, are easy to excite into the continuum. In this Letter, continuum states in the heaviest particle-stable Be isotope, 14Be, are studied by employing the method of inelastic proton scattering in inverse kinematics. New continuum states are found at excitation energies E*=3.54(16)  MeV and E*=5.25(19)  MeV. The structure of the earlier known 2(1)+ state at 1.54(13) MeV was confirmed with a predominantly (0d5/2)2 configuration while there is very clear evidence that the 2(2)+ state has a predominant (1s1/2, 0d5/2) structure with a preferential three-body decay mechanism. The region at about 7 MeV excitation shows distinct features of sequential neutron decay via intermediate states in 13Be. This demonstrates that the increasing availability of energetic beams of exotic nuclei opens up new vistas for experiments leading towards a new understanding of the interplay between bound and continuum states.

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