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

Technische Universität Darmstadt

GSI Helmholtz Centre for Heavy Ion Research

C. Caesar

GSI Helmholtz Centre for Heavy Ion Research

Technische Universität Darmstadt

M. Holl

Technische Universität Darmstadt

V. Panin

Technische Universität Darmstadt

M. Vandebrouck

University Paris-Saclay

F. Wamers

GSI Helmholtz Centre for Heavy Ion Research

Technische Universität Darmstadt

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-Zentrum Dresden-Rossendorf

J. Benlliure

Universidade de Santiagode Compostela

C.A. Bertulani

Texas A&M University

J. M. Boillos

Universidade de Santiagode Compostela

K. Boretzky

GSI Helmholtz Centre for Heavy Ion Research

M. Borge

CSIC - Instituto de Estructura de la Materia (IEM)

M. Caamano

Universidade de Santiagode Compostela

E. Casarejos

Universidad de Vigo

W. N. Catford

University of Surrey

J. Cederkall

Lund University

M. Chartier

University of Liverpool

L. V. Chulkov

GSI Helmholtz Centre for Heavy Ion Research

National Research Centre "Kurchatov Institute"

D. Cortina-Gil

Universidade de Santiagode Compostela

E. Cravo

Faculdade de Ciencias, Universidade de Lisboa

R. Crespo

Instituto Superior Tecnico

U. Datta Pramanik

Saha Institute of Nuclear Physics

Paloma Diaz Fernandez

Universidade de Santiagode Compostela

I. Dillmann

Justus Liebig University Giessen

GSI Helmholtz Centre for Heavy Ion Research

Z. Elekes

Hungarian Academy of Sciences

J. Enders

Technische Universität Darmstadt

O. Ershova

GSI Helmholtz Centre for Heavy Ion Research

A. Estradé

University of Edinburgh

F. Farinon

GSI Helmholtz Centre for Heavy Ion Research

L. M. Fraile

Complutense University

M. Freer

University of Birmingham

D. Galaviz

Faculdade de Ciencias, Universidade de Lisboa

Laboratorio de Instrumentacao e Fisica Experimental de Particulas

H. Geissel

GSI Helmholtz Centre for Heavy Ion Research

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

GSI Helmholtz Centre for Heavy Ion Research

M. Heine

Centre national de la recherche scientifique (CNRS)

Andreas Martin Heinz

Chalmers, Physics, Subatomic and Plasma Physics

A. Henriques

Laboratorio de Instrumentacao e Fisica Experimental de Particulas

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

GSI Helmholtz Centre for Heavy Ion Research

A. Knyazev

Lund University

T. Kröll

Technische Universität Darmstadt

N. Kurz

GSI Helmholtz Centre for Heavy Ion Research

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

GSI Helmholtz Centre for Heavy Ion Research

Technische Universität Darmstadt

A. Movsesyan

Technische Universität Darmstadt

E. Nacher

CSIC - Instituto de Estructura de la Materia (IEM)

M. A. Najafi

Kernfysisch Versneller Institut

Thomas Nilsson

Chalmers, Physics, Subatomic and Plasma Physics

C. Nociforo

GSI Helmholtz Centre for Heavy Ion Research

S. Paschalis

University of York

Technische Universität Darmstadt

A. Perea

CSIC - Instituto de Estructura de la Materia (IEM)

M. Petri

University of York

Technische Universität Darmstadt

S. Pietri

GSI Helmholtz Centre for Heavy Ion Research

R. Plag

GSI Helmholtz Centre for Heavy Ion Research

R. Reifarth

Goethe University Frankfurt

G. Ribeiro

CSIC - Instituto de Estructura de la Materia (IEM)

C. Rigollet

Kernfysisch Versneller Institut

M. Röder

Helmholtz-Zentrum Dresden-Rossendorf

Technische Universität Dresden

D. Rossi

GSI Helmholtz Centre for Heavy Ion Research

D. Savran

GSI Helmholtz Centre for Heavy Ion Research

H. Scheit

Technische Universität Darmstadt

H. Simon

GSI Helmholtz Centre for Heavy Ion Research

I. Syndikus

Technische Universität Darmstadt

J.E. Taylor

University of Liverpool

O. Tengblad

CSIC - Instituto de Estructura de la Materia (IEM)

Ronja Thies

Chalmers, Physics, Subatomic and Plasma Physics

Physical Review Letters

0031-9007 (ISSN) 1079-7114 (eISSN)

Vol. 120 15 152504

Exotiska nukleära system vid gränsen för existens - fysik i frontlinjen med perspektiv mot FAIR

Swedish Research Council (VR), 2018-01-01 -- 2021-12-31.

Experimental studies of exotic, light nuclear systems - combining front-line physics and FAIR preparations

Swedish Research Council (VR), 2012-01-01 -- 2014-12-31.

Subject Categories

Subatomic Physics

Physical Sciences

Roots

Basic sciences

DOI

10.1103/PhysRevLett.120.152504

More information

Latest update

2/8/2019 1