Pairing enhancement in a two-neutron transfer process through the continuum

Abstract

Enhancement, due to constructive interference through the many possible reaction channels, occurs in two-neutron transfer reactions from a bound system $A$ to a weakly-bound system ($A$+2), whenever the intermediate system is unbound and consists of a continuum with a resonant state. We elucidate this phenomenon in the case of ${}^6$He, modeled as two neutrons in the orbitals of an intermediate ${}^5$He nucleus, comparing the realistic case of an unbound ($A$+1) system with an artificially bound case. A properly modeled continuum in these calculations is found to be crucial and leads to significant enhancement due to pairing correlations.

arXiv comment9 pages, 3 figures

References in corpus (31)

• Mean-field description of ground-state properties of drip-line nuclei: Pairing and continuum effects
• Pairing correlations in nuclei on the neutron-drip line
• Measurement of two-halo neutron transfer reaction p(${}^{11}$Li,${}^9$Li)t at 3$A$ MeV
• Coexistence of BCS and BEC-like pair structures in halo nuclei
• Nuclear halo structure and pseudo-spin symmetry
• A two-neutron halo is unveiled in ${}^{29}$F
• Cooper pair transfer in nuclei
• Direct observation of the glue pairing the halo of the nucleus 11Li
• Testing the continuum discretized coupled channel method for deuteron induced reactions
• Coupled-channels calculations for nuclear reactions: from exotic nuclei to superheavy elements
• Three-body continuum discretization in a basis of transformed harmonic oscillator states
• Analytical transformed harmonic oscillator basis for three-body nuclei of astrophysical interest: Application to 6He
• Transfer to the continuum and Breakup reactions
• Local scale transformations and extended matter distributions in nuclei
• Particle motion in a deformed potential using a transformed oscillator basis
• Electric dipole response of low-lying excitations in the two-neutron halo nucleus ${}^{29}$F
• Deformation effects in the Coulomb breakup of 31Ne
• Exploring continuum structures with a pseudo-state basis
• Two-neutron transfer reaction mechanisms in ${}^{12}$C(${}^6$He,${}^4$He)${}^{14}$C using a realistic three-body ${}^6$He model
• Pairing in the continuum: the quadrupole response of the Borromean nucleus 6He
• Two-nucleon emitters within a pseudostate method: The case of ${}^6$Be and ${}^{16}$Be
• Electric multipole response of the halo nucleus ${}^6$He
• The ${}^{29}$F nucleus as a lighthouse on the coast of the island of inversion
• Are there good probes for the di-neutron correlation in light neutron-rich nuclei?
• Exploring the halo character and dipole response in the dripline nucleus ${}^{31}$F
• Neutron Removal from the Deformed Halo 31Ne Nucleus
• Exploring the structure of ${}^{29}$Ne
• Role of continuum in nuclear direct reactions with one-neutron halo nuclei: a one-dimensional model
• Cooper pairs in the Borromean nuclei ${}^6$He and ${}^{11}$Li using continuum single particle level density
• Tracing the dynamical interplay of low-energy reaction processes of exotic nuclei using a two-center molecular continuum
• Characterization of vorticity in pygmy resonances and soft-dipole modes with two-nucleon transfer reactions

Cited by in corpus (2)

• Investigating the rate of ${}^{10}$Be(n,$\gamma$)${}^{11}$Be radiative capture reaction within the FRDWBA framework
• Deformation, halo, and bubble structure: A paradigm shift of exotic phenomena in light to medium mass nuclei