Nuclear contacts of unstable nuclei

Abstract

Nuclear contact is a key quantity to describe the nucleon-nucleon short-range correlations (SRCs). While they have been determined by electron scattering experiments for selected stable nuclei, nuclear contacts are largely unknown for unstable nuclei. In this work, we study nuclear contacts for a number of nuclei in the vicinity of the doubly magic ${}^{132}$Sn from the theoretical perspective, with special emphasis on unstable nuclei. We find that the proton-proton contact generally gets suppressed by the excess neutrons for the Sn isotopes, resembling the suppression of $\alpha$-cluster formation reported recently for the same isotopic chain [J. Tanaka $\text{et al}.$, Science $\text{371}$, 260 (2021)]. This indicates a hidden universal aspect of SRCs and $\alpha$ clustering, two different kinds of nuclear correlations. Meanwhile, a linear relation is found between the proton-proton contact and the proton number for the $N=82$ isotones. Our results can be helpful for future experimental studies of SRCs in unstable nuclei at advanced facilities worldwide.

References in corpus (28)

• Large momentum part of fermions with large scattering length
• Energetics of a strongly correlated Fermi gas
• Probing Cold Dense Nuclear Matter
• Generalized Virial Theorem and Pressure Relation for a strongly correlated Fermi gas
• Nucleon-Nucleon Correlations, Short-lived Excitations, and the Quarks Within
• Momentum sharing in imbalanced Fermi systems
• Ab initio predictions link the neutron skin of ${}^{208}$Pb to nuclear forces
• Tensor Forces and the Ground-State Structure of Nuclei
• Axially Deformed Solution of the Skyrme-Hartree-Fock-Bogolyubov Equations using The Transformed Harmonic Oscillator Basis. The program HFBTHO (v1.66p)
• Current Status of r-Process Nucleosynthesis
• Short Range Correlations and the EMC Effect
• New measurements of high-momentum nucleons and short-range structures in nuclei
• Symmetry Energy of Nucleonic Matter With Tensor Correlations
• New data strengthen the connection between Short Range Correlations and the EMC effect
• Probing the core of the strong nuclear interaction
• The nuclear contacts and short range correlations in nuclei
• Generalized nuclear contacts and the nucleon's momentum distributions
• Scale and Scheme Independence and Position-Momentum Equivalence of Nuclear Short-Range Correlations
• First elastic electron scattering from ${}^{132}$Xe at the SCRIT facility
• Nuclear skin emergence in Skyrme deformed Hartree-Fock calculations
• Symmetry energy of cold nucleonic matter within a relativistic mean field model encapsulating effects of high momentum nucleons induced by short-range correlations
• Short Range Correlations and the EMC Effect in Effective Field Theory
• Electron scattering on two-neutron halo nuclei: The case of ${}^6$He
• Short range correlations and the isospin dependence of nuclear correlation functions
• High-momentum components in the ${}^4$He nucleus caused by inter-nucleon correlations
• Short-range correlations and the charge density
• Impacts of symmetry energy slope on the oscillation frequencies of neutron stars with short-range correlation and admixed dark matter
• Contact formalism for coupled channels

Cited by in corpus (4)

• Universal laws for nuclear contacts
• Nucleon Short-Range Correlations and High-Momentum Dynamics: Implications on the Equation of State of Dense Matter
• Neutron Star Equation of State with Nucleon Short-Range Correlations: A Concise Review and Open Issues
• Nucleon momentum distributions of complex nuclei from inclusive electron scattering