Emergent soft monopole modes in weakly bound deformed nuclei

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Emergent soft monopole modes in weakly bound deformed nuclei

J. C. Pei, M. Kortelainen, Y. N. Zhang, and F. R. Xu

Phys. Rev. C 90, 051304(R) – Published 21 November 2014

Abstract

Based on the Hartree-Fock-Bogoliubov solutions in large deformed coordinate spaces, the finite amplitude method for the quasiparticle random-phase approximation (FAM-QRPA) has been implemented, providing a suitable approach to probing 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.

Received 24 June 2014
Revised 4 October 2014

DOI:https://doi.org/10.1103/PhysRevC.90.051304

Authors & Affiliations

J. C. Pei¹, M. Kortelainen^2,3, Y. N. Zhang¹, and F. R. Xu¹

¹State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
²Department of Physics, P.O. Box 35 (YFL), University of Jyväskylä, FI-40014 Jyväskylä, Finland
³Helsinki Institute of Physics, P.O. Box 64, FI-00014 University of Helsinki, Finland

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Issue

Vol. 90, Iss. 5 — November 2014

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Physical Review C

covering nuclear physics