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Effective proton-ne...
Effective proton-neutron interaction near the drip line from unbound states in F-25,F-26
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- Vandebrouck, M. (author)
- National Large Heavy Ion Accelerator (GANIL)
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- Lepailleur, A. (author)
- National Large Heavy Ion Accelerator (GANIL),Technical University of Darmstadt
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- Sorlin, O. (author)
- National Large Heavy Ion Accelerator (GANIL)
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show more...
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- Aumann, T. (author)
- Technical University of Darmstadt,GSI Helmholtz Centre for Heavy Ion Research
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- Caesar, C. (author)
- Technical University of Darmstadt,GSI Helmholtz Centre for Heavy Ion Research,Texas A and M University
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- Holl, M. (author)
- Technical University of Darmstadt
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- Panin, V. (author)
- Technical University of Darmstadt
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- Wamers, F. (author)
- GSI Helmholtz Centre for Heavy Ion Research,Technical University of Darmstadt
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- Stroberg, S. R. (author)
- TRIUMF
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- Holt, J. D. (author)
- TRIUMF
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- Santos, F. D. O. (author)
- CEA Dam Ile-de France (DIF),GSI Helmholtz Centre for Heavy Ion Research
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- Alvarez-Pol, H. (author)
- University of Santiago de Compostela
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Atar, L. (author)
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- Avdeichikov, V. (author)
- Lund University,Lunds universitet,Kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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- Beceiro-Novo, S. (author)
- Michigan State University
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- Bemmerer, D. (author)
- Helmholtz-Zentrum Dresden-Rossendorf
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- Benlliure, J. (author)
- University of Santiago de Compostela
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Bertulani, C. A. (author)
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- Bogner, S. K. (author)
- Michigan State University
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- Boillos, J. M. (author)
- University of Santiago de Compostela
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- Boretzky, K. (author)
- GSI Helmholtz Centre for Heavy Ion Research
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- Borge, M. J. G. (author)
- CSIC Instituto de Estructura de la Materia (IEM),University of Caen Normandy
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- Caamano, M. (author)
- University of Santiago de Compostela
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- Casarejos, E. (author)
- University of Vigo
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- Catford, W. (author)
- University of Surrey
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- Cederkäll, J. (author)
- Lund University,Lunds universitet,Kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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- Chartier, M. (author)
- University of Liverpool
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- Chulkov, L. (author)
- GSI Helmholtz Centre for Heavy Ion Research,Russian Research Center 'Kurchatov Institute'
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- Cortina-Gil, D. (author)
- University of Santiago de Compostela
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- Cravo, E. (author)
- University of Lisbon
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- Crespo, R. (author)
- University of Lisbon
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- Pramanik, U. D. (author)
- Saha Institute of Nuclear Physics
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- Diaz Fernandez, Paloma, 1983 (author)
- University of Lisbon
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- Dillmann, I. (author)
- Justus Liebig University Giessen,GSI Helmholtz Centre for Heavy Ion Research
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- Elekes, Z. (author)
- Institute for Nuclear Research, Hungarian Academy of Sciences (ATOMKI)
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- Enders, J. (author)
- Technical University of Darmstadt
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- Ershova, O. (author)
- GSI Helmholtz Centre for Heavy Ion Research
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- Estrade, A. (author)
- University of Edinburgh
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Farinon, F. (author)
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- Fraile, L. M. (author)
- Complutense University of Madrid
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- Freer, M. (author)
- University of Birmingham
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- Galaviz, D. (author)
- Laboratory of Instrumentation and Experimental Particles Physics (LIP-Lisboa),University of Lisbon
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- Geissel, H. (author)
- GSI Helmholtz Centre for Heavy Ion Research
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- Gernhauser, R. (author)
- Technical University of Munich
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Gibelin, J. (author)
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- Golubev, P. (author)
- Lund University,Lunds universitet,Kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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- Gobel, K. (author)
- Goethe University
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- Hagdahl, Julius, 1985 (author)
- Chalmers University of Technology
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Heftrich, T. (author)
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Heil, M. (author)
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Heine, M. (author)
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- Heinz, Andreas Martin, 1967 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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Henriques, A. (author)
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Hergert, H. (author)
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Hufnagel, A. (author)
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Ignatov, A. (author)
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- Johansson, Håkan T, 1977 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Jonson, Björn, 1941 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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Kahlbow, J. (author)
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Kalantar-Nayestanaki, N. (author)
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Kanungo, R. (author)
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Kelic-Heil, A. (author)
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- Knyazev, A. (author)
- Lund University,Lunds universitet,Kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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Kroll, T. (author)
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Kurz, N. (author)
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Labiche, M. (author)
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Langer, C. (author)
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Le Bleis, T. (author)
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Lemmon, R. (author)
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- Lindberg, Simon, 1987 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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Machado, J. (author)
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Marganiec, J. (author)
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Marques, F. M. (author)
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Movsesyan, A. (author)
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Nacher, E. (author)
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Najafi, M. (author)
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Nikolskii, E. (author)
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- Nilsson, Thomas, 1965 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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Nociforo, C. (author)
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Paschalis, S. (author)
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Perea, A. (author)
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Petri, M. (author)
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Pietri, S. (author)
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Plag, R. (author)
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Reifarth, R. (author)
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Ribeiro, G. (author)
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Rigollet, C. (author)
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Roder, M. (author)
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Rossi, D. (author)
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Savran, D. (author)
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Scheit, H. (author)
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Schwenk, A. (author)
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Simon, H. (author)
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Syndikus, I. (author)
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- Taylor, J. T. (author)
- University of Liverpool
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Tengblad, O. (author)
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- Thies, Ronja, 1987 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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Togano, Y. (author)
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Velho, P. (author)
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Volkov, V. (author)
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Wagner, A. (author)
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Weick, H. (author)
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Wheldon, C. (author)
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Wilson, G. (author)
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Winfield, J. S. (author)
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Woods, P. (author)
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Yakorev, D. (author)
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- Zhukov, Mikhail, 1943 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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Zilges, A. (author)
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Zuber, K. (author)
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(creator_code:org_t)
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- 2017
- 2017
- English.
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In: Physical Review C. - 2469-9985 .- 2469-9993. ; 96:5
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http://dx.doi.org/10...
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Abstract
Subject headings
Close
- Background: Odd-odd nuclei, around doubly closed shells, have been extensively used to study proton-neutron interactions. However, the evolution of these interactions as a function of the binding energy, ultimately when nuclei become unbound, is poorly known. The F-26 nucleus, composed of a deeply bound pi 0d(5/2) proton and an unbound v0d(3/2) neutron on top of an O-24 core, is particularly adapted for this purpose. The coupling of this proton and neutron results in a J(pi) = 1(1)(+) - 4(1)(+) multiplet, whose energies must be determined to study the influence of the proximity of the continuum on the corresponding proton-neutron interaction. The J(pi) = 1(1)(+), 2(1)(+), 4(1)(+) bound states have been determined, and only a clear identification of the J(pi) = 3(1)(+) is missing. Purpose: We wish to complete the study of the J(pi) = 1(1)(+) - 4(1)(+) multiplet in F-26, by studying the energy and width of the J(pi) = 3(1)(+) unbound state. The method was first validated by the study of unbound states in F-25, for which resonances were already observed in a previous experiment. Method: Radioactive beams of Ne-26 and Ne-27, produced at about 440AMeV by the fragment separator at the GSI facility were used to populate unbound states in F-25 and F-26 via one-proton knockout reactions on a CH2 target, located at the object focal point of the (RB)-B-3/LAND setup. The detection of emitted. rays and neutrons, added to the reconstruction of the momentum vector of the A - 1 nuclei, allowed the determination of the energy of three unbound states in F-25 and two in F-26. Results: Based on its width and decay properties, the first unbound state in F-25, at the relative energy of 49(9) keV, is proposed to be a J(pi) = 1/ 2(-) arising from a p1/2 proton- hole state. In F-26, the first resonance at 323(33) keV is proposed to be the J(pi) = 3(1)(+) member of the J(pi) = 1(1)(+) - 4(1)(+) multiplet. Energies of observed states in F-25,F-26 have been compared to calculations using the independent-particle shell model, a phenomenological shell model, and the ab initio valence-space in-medium similarity renormalization group method. Conclusions: The deduced effective proton- neutron interaction is weakened by about 30-40% in comparison to the models, pointing to the need for implementing the role of the continuum in theoretical descriptions or to a wrong determination of the atomic mass of F-26.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Vandebrouck, M.
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Lepailleur, A.
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Sorlin, O.
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Aumann, T.
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Caesar, C.
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Holl, M.
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show more...
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Panin, V.
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Wamers, F.
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Stroberg, S. R.
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Holt, J. D.
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Santos, F. D. O.
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Alvarez-Pol, H.
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Atar, L.
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Avdeichikov, V.
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Beceiro-Novo, S.
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Bemmerer, D.
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Benlliure, J.
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Bertulani, C. A.
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Bogner, S. K.
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Boillos, J. M.
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Boretzky, K.
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Borge, M. J. G.
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Caamano, M.
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Casarejos, E.
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Catford, W.
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Cederkäll, J.
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Chartier, M.
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Chulkov, L.
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Cortina-Gil, D.
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Cravo, E.
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Crespo, R.
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Pramanik, U. D.
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Diaz Fernandez, ...
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Dillmann, I.
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Elekes, Z.
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Enders, J.
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Ershova, O.
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Estrade, A.
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Farinon, F.
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Fraile, L. M.
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Freer, M.
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Galaviz, D.
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Geissel, H.
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Gernhauser, R.
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Gibelin, J.
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Golubev, P.
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Gobel, K.
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Hagdahl, Julius, ...
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Heftrich, T.
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Heil, M.
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Heine, M.
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Heinz, Andreas M ...
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Henriques, A.
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Hergert, H.
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Hufnagel, A.
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Ignatov, A.
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Johansson, Håkan ...
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Jonson, Björn, 1 ...
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Kahlbow, J.
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Kalantar-Nayesta ...
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Kanungo, R.
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Kelic-Heil, A.
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Knyazev, A.
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Kroll, T.
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Kurz, N.
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Labiche, M.
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Langer, C.
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Le Bleis, T.
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Lemmon, R.
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Lindberg, Simon, ...
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Machado, J.
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Marganiec, J.
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Marques, F. M.
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Movsesyan, A.
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Nacher, E.
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Najafi, M.
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Nikolskii, E.
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Nilsson, Thomas, ...
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Nociforo, C.
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Paschalis, S.
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Perea, A.
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Petri, M.
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Pietri, S.
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Plag, R.
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Reifarth, R.
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Ribeiro, G.
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Rigollet, C.
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Roder, M.
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Rossi, D.
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Savran, D.
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Scheit, H.
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Schwenk, A.
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Simon, H.
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Syndikus, I.
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Taylor, J. T.
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Tengblad, O.
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Thies, Ronja, 19 ...
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Togano, Y.
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Velho, P.
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Volkov, V.
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Wagner, A.
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Weick, H.
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Wheldon, C.
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Wilson, G.
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Winfield, J. S.
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Woods, P.
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Yakorev, D.
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Zhukov, Mikhail, ...
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Zilges, A.
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Zuber, K.
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Subatomic Physic ...
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Physical Review ...
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Chalmers University of Technology
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Lund University