Observation of the N11 Ground State

J. M. Oliveira, Jr., A. Lépine-Szily, H. G. Bohlen, A. N. Ostrowski, R. Lichtenthäler, A. Di Pietro, A. M. Laird, G. F. Lima, L. Maunoury, F. de Oliveira Santos, P. Roussel-Chomaz, H. Savajols, W. Trinder, A. C. C. Villari, and A. de Vismes
Phys. Rev. Lett. 84, 4056 – Published 1 May 2000
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Abstract

The ground state of the proton-rich, unbound nucleus 11N was observed, together with six excited states using the multinucleon transfer reaction 10B(14N,13B)11N at 30A MeV incident energy at Grand Accélérateur National d'Ions Lourds. Levels of 11N are observed as well defined resonances in the spectrum of the 13B ejectiles. They are localized at 1.63(5), 2.16(5), 3.06(8), 3.61(5), 4.33(5), 5.98(10), and 6.54(10) MeV above the 10C+p threshold. The ground-state resonance has a mass excess of 24.618(50) MeV; the experimental width is smaller than theoretical predictions.

  • Received 16 November 1999

DOI:https://doi.org/10.1103/PhysRevLett.84.4056

©2000 American Physical Society

Authors & Affiliations

J. M. Oliveira, Jr.1,2, A. Lépine-Szily1, H. G. Bohlen3, A. N. Ostrowski4, R. Lichtenthäler1, A. Di Pietro4, A. M. Laird4, G. F. Lima1, L. Maunoury5, F. de Oliveira Santos5, P. Roussel-Chomaz5, H. Savajols5, W. Trinder5, A. C. C. Villari5, and A. de Vismes5

  • 1IFUSP-Universidade de São Paulo, CP 66318, 05389-970 São Paulo, Brazil
  • 2CEBES–Centro de Ciências Exatas, Biológicas e da Saude, Universidade de Sorocaba, Sorocaba, Brazil
  • 3Hahn-Meitner-Institut Berlin GmbH, Glienicker Strasse 100, D-14109 Berlin, Germany
  • 4Department of Physics & Astronomy, University of Edinburgh, Edinburgh, EH9 3JZ United Kingdom
  • 5GANIL, Bld Henri Becquerel, BP 5027, 14021 Caen Cedex, France

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Vol. 84, Iss. 18 — 1 May 2000

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