Probing the Z = 6 spin-orbit shell gap with (p,2p) quasi-free scattering reactions
Journal article, 2020

The evolution of the traditional nuclear magic numbers away from the valley of stability is an active field of research. Experimental efforts focus on providing key spectroscopic information that will shed light into the structure of exotic nuclei and understanding the driving mechanism behind the shell evolution. In this work, we investigate the Z=6 spin-orbit shell gap towards the neutron dripline. To do so, we employed NA(p,2p)CA−1 quasi-free scattering reactions to measure the proton component of the 21+ state of 16,18,20C. The experimental findings support the notion of a moderate reduction of the proton 1p1/2−1p3/2 spin-orbit splitting, at variance to recent claims for a prevalent Z=6 magic number towards the neutron dripline.

Quasi-free scattering reactions

Shell evolution

Magic numbers

Tensor force

Spin-orbit splitting

Exotic nuclei

Author

I. Syndikus

Technische Universität Darmstadt

Helmholtz

M. Petri

University of York

A. O. Macchiavelli

Lawrence Berkeley National Laboratory

S. Paschalis

University of York

C.A. Bertulani

Texas A&M University

T. Aumann

Technische Universität Darmstadt

Helmholtz

H. Alvarez-Pol

Universidade de Santiagode Compostela

L. Atar

Technische Universität Darmstadt

S. Beceiro-Novo

Universidade de Santiagode Compostela

Michigan State University

J. Benlliure

Universidade de Santiagode Compostela

J. M. Boillos

Universidade de Santiagode Compostela

K. Boretzky

Helmholtz

M. Borge

CSIC - Instituto de Estructura de la Materia (IEM)

B. A. Brown

Michigan State University

M. Caamano

Universidade de Santiagode Compostela

C. Caesar

Technische Universität Darmstadt

Helmholtz

E. Casarejos

Universidad de Vigo

W. N. Catford

University of Surrey

J. Cederkall

Lund University

S. Chakraborty

Saha Institute of Nuclear Physics

L. V. Chulkov

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

I. Dillmann

Helmholtz

Justus Liebig University Giessen

Paloma Diaz Fernandez

Chalmers, Physics, Subatomic and Plasma Physics

Universidade de Santiagode Compostela

Z. Elekes

Hungarian Academy of Sciences

J. Enders

Technische Universität Darmstadt

F. Farinon

Helmholtz

L. M. Fraile

Complutense University

D. Galaviz

LIP - Lisboa

H. Geissel

Helmholtz

R. Gernhäuser

Technical University of Munich

P.I. Golubev

Lund University

K. Gobel

Goethe University Frankfurt

M. Heil

Helmholtz

M. Heine

IPHC

Andreas Martin Heinz

Chalmers, Physics, Subatomic, High Energy and Plasma Physics

A. Henriques

LIP - Lisboa

M. Holl

Technische Universität Darmstadt

Håkan T Johansson

Chalmers, Physics, Subatomic, High Energy and Plasma Physics

Björn Jonson

Chalmers, Physics, Subatomic and Plasma Physics

N. Kalantar-Nayestanaki

Kernfysisch Versneller Institut

R. Kanungo

Saint Mary's University

TRIUMF

A. Kelic-Heil

Helmholtz

T. Kröll

Technische Universität Darmstadt

N. Kurz

Helmholtz

C. Langer

Goethe University Frankfurt

T. Le Bleis

Technical University of Munich

J. Machado

University of Lisbon

J. Marganiec-Gałazka

Helmholtz

Technische Universität Darmstadt

E. Nacher

CSIC - Instituto de Estructura de la Materia (IEM)

Thomas Nilsson

Chalmers, Physics

C. Nociforo

Helmholtz

V. Panin

Technische Universität Darmstadt

A. Perea

CSIC - Instituto de Estructura de la Materia (IEM)

S. Pietri

Helmholtz

R. Plag

Helmholtz

A. Rahaman

Saha Institute of Nuclear Physics

R. Reifarth

Goethe University Frankfurt

A. Revel

Michigan State University

G. Ribeiro

CSIC - Instituto de Estructura de la Materia (IEM)

C. Rigollet

Kernfysisch Versneller Institut

D. Rossi

Helmholtz

Technische Universität Darmstadt

D. Savran

Helmholtz

H. Scheit

Technische Universität Darmstadt

H. Simon

Helmholtz

Olivier Sorlin

IN2P3 Institut National de Physique Nucleaire et de Physique des Particules

O. Tengblad

CSIC - Instituto de Estructura de la Materia (IEM)

Y. Togano

RIKEN

M. Vandebrouck

IN2P3 Institut National de Physique Nucleaire et de Physique des Particules

V. Volkov

National Research Centre "Kurchatov Institute"

Technische Universität Darmstadt

F. Wamers

Helmholtz

Technische Universität Darmstadt

C. Wheldon

University of Birmingham

G. L. Wilson

University of Surrey

J. S. Winfield

Helmholtz

H. Weick

Helmholtz

P. J. Woods

University of Edinburgh

D. Yakorev

Helmholtz

Mikhail Zhukov

Chalmers, Physics

A. Zilges

University of Cologne

K. Zuber

Technische Universität Dresden

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

0370-2693 (ISSN)

Vol. 809 135748

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

10.1016/j.physletb.2020.135748

More information

Latest update

4/6/2021 2