DÍAZ-CORTÉS, J.; BENLLIURE, J.; RODRÍGUEZ-SÁNCHEZ, J.L.; ALVAREZ-POL, H.; AUMANN, T.; BERTULANI, C.A.; BLANK, B.; CASAREJOS, E.; CORTINA-GIL, D.; DRAGOSAVAC, D.; FÖHR, V.; GARGANO, A.; GASCON, M.; GAWLIKOWICZ, W.; HEINZ, A.; HELARIUTTA, K.; KELÍC-HEIL, A.; LUKÍC, S.; MONTES, F.; PÉREZ-LOUREIRO, D.; PIENKOWSKI, L.; SCHMIDT, K-H.; STANIOU, M.; SUBOTÍC, K.; SÜMMERER, K.; TAIEB, J.; TRZCINSKA, A.

doi:10.1016/j.physletb.2020.135962

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DÍAZ-CORTÉS, J.

BENLLIURE, J.

RODRÍGUEZ-SÁNCHEZ, J.L.

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Phys.Lett.B. 2020, vol. 811, p. 135962

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Single-neutron and single-proton removal cross sections have been measured for medium-mass neutron-rich nuclei around Z=50 and energies around 1000 A 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.< Réduire

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Nucleon removal

Medium-mass neutron-rich nuclei

Short-range correlations

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Systematic reduction of the proton-removal cross section in neutron-rich medium-mass nuclei

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