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
University of 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 135748Experimental 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
Subatomic Physics
Physical Sciences
Roots
Basic sciences
DOI
10.1016/j.physletb.2020.135748