Di-neutron correlation in monopole two-neutron transfer modes in Sn isotope chain

Abstract

We study microscopic structures of monopole pair vibrational modes and associated two-neutron transfer amplitudes in neutron-rich Sn isotopes by means of the linear response formalism of the quasiparticle random phase approximation(QRPA). For this purpose we introduce a method to decompose the transfer amplitudes with respect to two-quasiparticle components of the QRPA eigen mode. It is found that pair-addition ibrational modes in neutron-rich ${}^{132-140}$Sn and the pair rotational modes in ${}^{142-150}$Sn are commonly characterized by coherent contributions of quasaiparticle states having high orbital angular momenta $l \gesim 5$, which suggests transfer of a spatially correlated neutron pair. The calculation also predicts a high-lying pair vibration, the giant pair vibration, emerging near the one-neutron separation energy in ${}^{110-130}$Sn, and we find that they have the same di-neutron characters as that of the low-lying pair vibration in ${}^{132-140}$Sn.

30 pages, 10 figures

References in corpus (13)

• Discovery of the shape coexisting 0+ state in 32Mg by a two neutron transfer reaction
• Measurement of two-halo neutron transfer reaction p(${}^{11}$Li,${}^9$Li)t at 3$A$ MeV
• Pairing Vibrations Study with the Time-Dependent Hartree-Fock-Bogoliubov theory
• Effective pairing interactions with isospin density dependence
• Generic strong coupling behavior of Cooper pairs in the surface of superfluid nuclei
• The ${}^8$He and ${}^{10}$He spectra studied in the $(t$,$p)$ reaction
• Dineutron structure in ${}^8$He
• Systematic study of ${}^{9,10,11}$Li with the tensor and pairing correlations
• Constraining the nuclear pairing gap with pairing vibrations
• Novel cluster states in ${}^{10}$Be
• Quantitative study of coherent pairing modes with two neutron transfer: Sn-isotopes
• Di-neutron correlation in soft octupole excitations of neutron-rich Ni isotopes beyond N=50
• Open problems in nuclear structure near drip lines

Cited by in corpus (13)

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• Green's function method for the single-particle resonances in a deformed Dirac equation
• Collective inertia of Nambu-Goldstone mode from linear response theory
• Green's function method for the spin and pseudospin symmetries in the single-particle resonant states
• Searching for single-particle resonances with the Green's function method
• Continuum Skyrme-Hartree-Fock-Bogoliubov theory with Green's function method for odd-$A$ nuclei
• Study of single-particle resonant states with Green's function method
• Two-neutron transfer in Sn isotopes beyond the N = 82 shell closure
• Probing spin and pseudospin symmetries in deformed nuclei by the Green's function method
• Continuum random-phase approximation for (n,γ) reactions on neutron-rich nuclei: collective effects and resonances
• Higgs response and pair condensation energy in superfluid nuclei
• Continuum random-phase approximation for gamma transition between excited states in neutron-rich nuclei