Strong Neutron Pairing in core+4n Nuclei
Journal article, 2018
The emission of neutron pairs from the neutron-rich N=12 isotones C18 and O20 has been studied by high-energy nucleon knockout from N19 and O21 secondary beams, populating unbound states of the two isotones up to 15 MeV above their two-neutron emission thresholds. The analysis of triple fragment-n-n correlations shows that the decay N19(-1p)C18∗→C16+n+n is clearly dominated by direct pair emission. The two-neutron correlation strength, the largest ever observed, suggests the predominance of a C14 core surrounded by four valence neutrons arranged in strongly correlated pairs. On the other hand, a significant competition of a sequential branch is found in the decay O21(-1n)O20∗→O18+n+n, attributed to its formation through the knockout of a deeply bound neutron that breaks the O16 core and reduces the number of pairs.
Author
A. Revel
IN2P3 Institut National de Physique Nucleaire et de Physique des Particules
ENSICAEN Ecole Nationale Superieure d'Ingenieurs de Caen
F. M. Marqués
ENSICAEN Ecole Nationale Superieure d'Ingenieurs de Caen
Olivier Sorlin
IN2P3 Institut National de Physique Nucleaire et de Physique des Particules
T. Aumann
Helmholtz Association of German Research Centres
Technische Universität Darmstadt
C. Caesar
Helmholtz Association of German Research Centres
Technische Universität Darmstadt
M. Holl
Technische Universität Darmstadt
V. Panin
Technische Universität Darmstadt
M. Vandebrouck
University Paris-Saclay
F. Wamers
Technische Universität Darmstadt
Helmholtz Association of German Research Centres
H. Alvarez-Pol
Universidade de Santiagode Compostela
L. Atar
Technische Universität Darmstadt
V.V. Avdeichikov
Lund University
S. Beceiro-Novo
Michigan State University
D. Bemmerer
Helmholtz Association of German Research Centres
J. Benlliure
Universidade de Santiagode Compostela
C.A. Bertulani
Texas A&M University
J. M. Boillos
Universidade de Santiagode Compostela
K. Boretzky
Helmholtz Association of German Research Centres
M. Borge
Spanish National Research Council (CSIC)
M. Caamano
Universidade de Santiagode Compostela
E. Casarejos
University of Vigo
W. N. Catford
University of Surrey
J. Cederkall
Lund University
M. Chartier
University of Liverpool
L. V. Chulkov
Helmholtz Association of German Research Centres
National Research Centre "Kurchatov Institute"
D. Cortina-Gil
Universidade de Santiagode Compostela
E. Cravo
University of Lisbon
R. Crespo
Instituto Superior Tecnico
U. Datta Pramanik
Saha Institute of Nuclear Physics
Paloma Diaz Fernandez
Universidade de Santiagode Compostela
I. Dillmann
Helmholtz Association of German Research Centres
Justus Liebig University Giessen
Z. Elekes
Hungarian Academy of Sciences
J. Enders
Technische Universität Darmstadt
O. Ershova
Helmholtz Association of German Research Centres
A. Estradé
University of Edinburgh
F. Farinon
Helmholtz Association of German Research Centres
L. M. Fraile
Complutense University
M. Freer
University of Birmingham
D. Galaviz
Laboratory of Instrumentation and Experimental Particle Physics
University of Lisbon
H. Geissel
Helmholtz Association of German Research Centres
R. Gernhäuser
Technical University of Munich
P.I. Golubev
Lund University
K. Gobel
Goethe University Frankfurt
Julius Hagdahl
Chalmers, Physics, Subatomic and Plasma Physics
T. Heftrich
Goethe University Frankfurt
M. Heil
Helmholtz Association of German Research Centres
M. Heine
Centre national de la recherche scientifique (CNRS)
Andreas Martin Heinz
Chalmers, Physics, Subatomic and Plasma Physics
A. Henriques
Laboratory of Instrumentation and Experimental Particle Physics
A. Ignatov
Technische Universität Darmstadt
Håkan T Johansson
Chalmers, Physics, Subatomic and Plasma Physics
Björn Jonson
Chalmers, Physics, Subatomic and Plasma Physics
J. Kahlbow
Technische Universität Darmstadt
N. Kalantar-Nayestanaki
Kernfysisch Versneller Institut
R. Kanungo
Saint Mary's University
A. Kelic-Heil
Helmholtz Association of German Research Centres
A. Knyazev
Lund University
T. Kröll
Technische Universität Darmstadt
N. Kurz
Helmholtz Association of German Research Centres
M. Labiche
Daresbury Laboratory
C. Langer
Goethe University Frankfurt
T. Le Bleis
Technical University of Munich
R.C. Lemmon
Daresbury Laboratory
Simon Lindberg
Chalmers, Physics, Subatomic and Plasma Physics
J. Machado
Nova University of Lisbon
J. Marganiec
Helmholtz Association of German Research Centres
Technische Universität Darmstadt
A. Movsesyan
Technische Universität Darmstadt
E. Nacher
Spanish National Research Council (CSIC)
M. A. Najafi
Kernfysisch Versneller Institut
Thomas Nilsson
Chalmers, Physics, Subatomic and Plasma Physics
C. Nociforo
Helmholtz Association of German Research Centres
S. Paschalis
University of York
Technische Universität Darmstadt
A. Perea
Spanish National Research Council (CSIC)
M. Petri
University of York
Technische Universität Darmstadt
S. Pietri
Helmholtz Association of German Research Centres
R. Plag
Helmholtz Association of German Research Centres
R. Reifarth
Goethe University Frankfurt
G. Ribeiro
Spanish National Research Council (CSIC)
C. Rigollet
Kernfysisch Versneller Institut
M. Röder
Helmholtz Association of German Research Centres
Technische Universität Dresden
D. Rossi
Helmholtz Association of German Research Centres
D. Savran
Helmholtz Association of German Research Centres
H. Scheit
Technische Universität Darmstadt
H. Simon
Helmholtz Association of German Research Centres
I. Syndikus
Technische Universität Darmstadt
J.E. Taylor
University of Liverpool
O. Tengblad
Spanish National Research Council (CSIC)
Ronja Thies
Chalmers, Physics, Subatomic and Plasma Physics
Physical Review Letters
0031-9007 (ISSN) 1079-7114 (eISSN)
Vol. 120 15 152504Exotiska nukleära system vid gränsen för existens - fysik i frontlinjen med perspektiv mot FAIR
Swedish Research Council (VR) (2017-03839), 2018-01-01 -- 2021-12-31.
Experimental studies of exotic, light nuclear systems - combining front-line physics and FAIR preparations
Swedish Research Council (VR) (2011-5324), 2012-01-01 -- 2014-12-31.
Subject Categories (SSIF 2011)
Subatomic Physics
Physical Sciences
Roots
Basic sciences
DOI
10.1103/PhysRevLett.120.152504