Systematic reduction of the proton-removal cross section in neutron-rich medium-mass nuclei
Artikel i vetenskaplig tidskrift, 2020
Single-neutron and single-proton removal cross sections have been measured for medium-mass neutron-rich nuclei around Z=50 and energies around 1000A MeV using the FRagment Separator (FRS) at GSI. The measured cross sections confirm the relative low values of the proton-removal cross sections, observed since a long time ago and not yet understood. Model calculations considering the knock-out process together with initial- and final-state interactions describe the measured neutron-removal cross sections. Proton-removal cross sections are, however, significantly over-predicted by the same calculations. The observed difference can be explained to a large extent by the knock-out of short-range correlated nucleons from dominant neutron-proton pairs in neutron-rich nuclei.
Nucleon removal
Short-range correlations
Medium-mass neutron-rich nuclei
Författare
J. Díaz-Cortes
Universidade de Santiagode Compostela
J. Benlliure
Universidade de Santiagode Compostela
J. L. Rodriguez-Sanchez
Universidade de Santiagode Compostela
H. Alvarez-Pol
Universidade de Santiagode Compostela
T. Aumann
Technische Universität Darmstadt
C.A. Bertulani
Texas A&M University
B. Blank
Centre d'Etudes Nucleaires de Bordeaux Gradignan
E. Casarejos
Universidad de Vigo
D. Cortina-Gil
Universidade de Santiagode Compostela
D. Dragosavac
Universidade de Santiagode Compostela
V. Föhr
Helmholtz
A. Gargano
Istituto Nazionale di Fisica Nucleare
M. Gascon
Universidade de Santiagode Compostela
W. Gawlikowicz
Uniwersytet Kardynala Stefana Wyszynskiego w Warszawie
Andreas Martin Heinz
Chalmers, Fysik, Subatomär, högenergi- och plasmafysik
K. Helariutta
Helsingin Yliopisto
A. Kelic-Heil
Helmholtz
S. Lukić
Helmholtz
F. Montes
Helmholtz
D. Perez-Loureiro
Universidade de Santiagode Compostela
L. Pieńkowski
Uniwersytet Warszawski
K. H. Schmidt
Helmholtz
M. Staniou
Helmholtz
K. Subotić
Institut za nuklearne nauke Vinca
K. Summerer
Helmholtz
J. Taieb
Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)
A. Trzcińska
Uniwersytet Warszawski
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
0370-2693 (ISSN)
Vol. 811 135962Ämneskategorier
Acceleratorfysik och instrumentering
Subatomär fysik
Teoretisk kemi
DOI
10.1016/j.physletb.2020.135962