Emergent Soft Monopole Modes in Weakly-Bound Deformed Nuclei

Abstract

Based on the Hartree-Fock-Bogoliubov solutions in large deformed coordinate spaces, the finite amplitude method for quasiparticle random phase approximation (FAM-QRPA) has been implemented, providing a suitable approach to probe collective excitations of weakly-bound nuclei embedded in the continuum. The monopole excitation modes in Magnesium isotopes up to the neutron drip line have been studied with the FAM-QRPA framework on both the coordinate-space and harmonic oscillator basis methods. Enhanced soft monopole strengths and collectivity as a result of weak-binding effects have been unambiguously demonstrated.

5 pages, 4 figures, accepted for PRC (Rapid Comm.)

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Cited by in corpus (5)

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• Self-consistent collective coordinate for reaction path and inertial mass
• Multipole modes of excitation in triaxially deformed superfluid nuclei
• Finite amplitude method on the deformed relativistic Hartree-Bogoliubov theory in continuum: The isoscalar giant monopole resonance in exotic nuclei