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-Gemeinschaft Deutscher Forschungszentren
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-Gemeinschaft Deutscher Forschungszentren
S. Lukić
Helmholtz-Gemeinschaft Deutscher Forschungszentren
F. Montes
Helmholtz-Gemeinschaft Deutscher Forschungszentren
D. Perez-Loureiro
Universidade de Santiagode Compostela
L. Pieńkowski
Uniwersytet Warszawski
K. H. Schmidt
Helmholtz-Gemeinschaft Deutscher Forschungszentren
M. Staniou
Helmholtz-Gemeinschaft Deutscher Forschungszentren
K. Subotić
Institut za nuklearne nauke Vinca
K. Summerer
Helmholtz-Gemeinschaft Deutscher Forschungszentren
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 (SSIF 2011)
Acceleratorfysik och instrumentering
Subatomär fysik
Teoretisk kemi
DOI
10.1016/j.physletb.2020.135962