Measurement of the dipole polarizability of the unstable neutron-rich nucleus Ni68
Journal article, 2013

The E1 strength distribution in Ni68 has been investigated using Coulomb excitation in inverse kinematics at the RB3-LAND setup and by measuring the invariant mass in the one- and two-neutron decay channels. The giant dipole resonance and a low-lying peak (pygmy dipole resonance) have been observed at 17.1(2) and 9.55(17) MeV, respectively. The measured dipole polarizability is compared to relativistic random phase approximation calculations yielding a neutron-skin thickness of 0.17(2) fm. A method and analysis applicable to neutron-rich nuclei has been developed, allowing for a precise determination of neutron skins in nuclei as a function of neutron excess.

Author

D. Rossi

Johannes Gutenberg University Mainz

GSI Helmholtz Centre for Heavy Ion Research

P. Adrich

GSI Helmholtz Centre for Heavy Ion Research

F. Aksouh

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

J. Benlliure

Universidade de Santiagode Compostela

M. Böhmer

Technical University of Munich

K. Boretzky

GSI Helmholtz Centre for Heavy Ion Research

E. Casarejos

Universidad de Vigo

M. Chartier

University of Liverpool

A. Chatillon

GSI Helmholtz Centre for Heavy Ion Research

D. Cortina-Gil

Universidade de Santiagode Compostela

U. Datta Pramanik

Saha Institute of Nuclear Physics

H. Emling

GSI Helmholtz Centre for Heavy Ion Research

O.V. Ershova

Goethe University Frankfurt

B. Fernandez-Dominguez

Universidade de Santiagode Compostela

University of Liverpool

H. Geissel

GSI Helmholtz Centre for Heavy Ion Research

M. Górska

GSI Helmholtz Centre for Heavy Ion Research

M. Heil

GSI Helmholtz Centre for Heavy Ion Research

Håkan T Johansson

Chalmers, Applied Physics, Subatomic Physics

A.R. Junghans

Helmholtz-Zentrum Dresden-Rossendorf

A. Kelic-Heil

GSI Helmholtz Centre for Heavy Ion Research

O.A. Kiselev

GSI Helmholtz Centre for Heavy Ion Research

Johannes Gutenberg University Mainz

A. Klimkiewicz

Jagiellonian University in Kraków

GSI Helmholtz Centre for Heavy Ion Research

J.V. Kratz

Johannes Gutenberg University Mainz

R. Krücken

Technical University of Munich

N. Kurz

GSI Helmholtz Centre for Heavy Ion Research

M. Labiche

University of the West of Scotland

Daresbury Laboratory

T. Le Bleis

Goethe University Frankfurt

Institut Pluridisciplinaire Hubert Curien

GSI Helmholtz Centre for Heavy Ion Research

R.C. 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

P. Maierbeck

Technical University of Munich

A. Movsesyan

Technische Universität Darmstadt

Thomas Nilsson

Chalmers, Applied Physics, Subatomic Physics

C. Nociforo

GSI Helmholtz Centre for Heavy Ion Research

R. Palit

Tata Institute of Fundamental Research

S. Paschalis

University of Liverpool

Technische Universität Darmstadt

R. Plag

GSI Helmholtz Centre for Heavy Ion Research

Goethe University Frankfurt

R. Reifarth

Goethe University Frankfurt

GSI Helmholtz Centre for Heavy Ion Research

D. Savran

GSI Helmholtz Centre for Heavy Ion Research

Frankfurt Institute for Advanced Studies

H. Scheit

Technische Universität Darmstadt

H. Simon

GSI Helmholtz Centre for Heavy Ion Research

K. Sümmerer

GSI Helmholtz Centre for Heavy Ion Research

A. Wagner

Helmholtz-Zentrum Dresden-Rossendorf

W. Walua

Jagiellonian University in Kraków

H. Weick

GSI Helmholtz Centre for Heavy Ion Research

M. Winkler

GSI Helmholtz Centre for Heavy Ion Research

Physical Review Letters

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

Vol. 111 24 242503

Subject Categories

Subatomic Physics

Physical Sciences

Roots

Basic sciences

DOI

10.1103/PhysRevLett.111.242503

More information

Latest update

6/12/2018