Studies of continuum states in (16) Ne using three-body correlation techniques
Journal article, 2015

Two-proton decay of the unbound nucleus Ne-16 , produced in one-neutron knockout from a 500 MeV/u Ne-17 beam, has been studied at GSI. The ground state, at a resonance energy 1.388(15) MeV, ( MeV) above the O-14 +p+p threshold, and two narrow resonances at MeV and 7.57(6) MeV have been investigated. A comparison of the energy difference between the first excited 2(+) state and the 0(+) ground state in Ne-16 with its mirror nucleus C-16 reveals a small Thomas-Ehrman shift (TES) of keV. A trend of the TES for the T = 2 quintet is obtained by completing the known data with a prediction for F-16 obtained from an IMME analysis. The decay mechanisms of the observed three resonances were revealed from an analysis of the energy and angular correlations of the O-14 +p+p decay products. The ground state decay can be considered as a genuine three-body (democratic) mode and the excited states decay sequentially via states in the intermediate nucleus F-15 , the 3.22 MeV state predominantly via the F-15 ground-state resonance, while the 7.57 MeV state decays via the 5/2(+) resonance in F-15 at 2.8 MeV above the O-14 +p+p threshold. Further, from an analysis of angular correlations, the spin-parity of the 7.57 MeV state has been determined as and assigned as the third 2(+) state in Ne-16 based on a comparison with C-16.

Author

J. Marganiec

GSI Helmholtz Centre for Heavy Ion Research

Technische Universität Darmstadt

F. Wamers

GSI Helmholtz Centre for Heavy Ion Research

Technische Universität Darmstadt

Frankfurt Institute for Advanced Studies

F. Aksouh

GSI Helmholtz Centre for Heavy Ion Research

Y. Aksyutina

GSI Helmholtz Centre for Heavy Ion Research

H. Alvarez-Pol

Universidade de Santiagode Compostela

T. Aumann

Technische Universität Darmstadt

GSI Helmholtz Centre for Heavy Ion Research

S. Beceiro-Novo

Universidade de Santiagode Compostela

K. Boretzky

GSI Helmholtz Centre for Heavy Ion Research

M. J. G. Borge

European Organization for Nuclear Research

CSIC - Instituto de Estructura de la Materia (IEM)

M. Chartier

University of Liverpool

A. Chatillon

GSI Helmholtz Centre for Heavy Ion Research

L. V. Chulkov

National Research Centre "Kurchatov Institute"

GSI Helmholtz Centre for Heavy Ion Research

D. Cortina-Gil

Universidade de Santiagode Compostela

H. Emling

GSI Helmholtz Centre for Heavy Ion Research

O. Ershova

GSI Helmholtz Centre for Heavy Ion Research

Goethe University Frankfurt

L.M. Fraile

Complutense University

H. O. U. Fynbo

Aarhus University

D. Galaviz

CSIC - Instituto de Estructura de la Materia (IEM)

H. Geissel

GSI Helmholtz Centre for Heavy Ion Research

M. Heil

GSI Helmholtz Centre for Heavy Ion Research

D. H. H. Hoffmann

Technische Universität Darmstadt

J. Hoffmann

GSI Helmholtz Centre for Heavy Ion Research

Håkan T Johansson

Chalmers, Fundamental Physics

Björn Jonson

Chalmers, Fundamental Physics

C. Karagiannis

GSI Helmholtz Centre for Heavy Ion Research

O. A. Kiselev

GSI Helmholtz Centre for Heavy Ion Research

J. V. Kratz

Johannes Gutenberg University Mainz

R. Kulessa

Jagiellonian University in Kraków

N. Kurz

GSI Helmholtz Centre for Heavy Ion Research

C. Langer

GSI Helmholtz Centre for Heavy Ion Research

Goethe University Frankfurt

M. Lantz

Uppsala University

T. Le Bleis

Technical University of Munich

GSI Helmholtz Centre for Heavy Ion Research

R. Lemmon

Daresbury Laboratory

Y. A. Litvinov

GSI Helmholtz Centre for Heavy Ion Research

K. Mahata

Bhabha Atomic Research Centre

GSI Helmholtz Centre for Heavy Ion Research

C. Muntz

GSI Helmholtz Centre for Heavy Ion Research

Thomas Nilsson

Chalmers, Fundamental Physics

C. Nociforo

GSI Helmholtz Centre for Heavy Ion Research

Göran Hugo Nyman

Chalmers, Fundamental Physics

W. Ott

GSI Helmholtz Centre for Heavy Ion Research

V. Panin

GSI Helmholtz Centre for Heavy Ion Research

Technische Universität Darmstadt

S. Paschalis

Technische Universität Darmstadt

University of Liverpool

A. Perea

CSIC - Instituto de Estructura de la Materia (IEM)

R. Plag

GSI Helmholtz Centre for Heavy Ion Research

Goethe University Frankfurt

R. Reifarth

Goethe University Frankfurt

GSI Helmholtz Centre for Heavy Ion Research

A. Richter

Technische Universität Darmstadt

C. Rodriguez-Tajes

Universidade de Santiagode Compostela

D. Rossi

GSI Helmholtz Centre for Heavy Ion Research

K. Riisager

Aarhus University

D. Savran

GSI Helmholtz Centre for Heavy Ion Research

Frankfurt Institute for Advanced Studies

G. Schrieder

Technische Universität Darmstadt

H. Simon

GSI Helmholtz Centre for Heavy Ion Research

J. Stroth

Goethe University Frankfurt

K. Summerer

GSI Helmholtz Centre for Heavy Ion Research

O. Tengblad

CSIC - Instituto de Estructura de la Materia (IEM)

H. Weick

GSI Helmholtz Centre for Heavy Ion Research

M. Wiescher

University of Notre Dame

C. Wimmer

Goethe University Frankfurt

GSI Helmholtz Centre for Heavy Ion Research

Mikhail Zhukov

Chalmers, Fundamental Physics

European Physical Journal A

1434-6001 (ISSN) 1434-601X (eISSN)

Vol. 51 1 1-9

Subject Categories

Subatomic Physics

DOI

10.1140/epja/i2015-15009-0

More information

Latest update

4/6/2018 1