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Large-amplitude Qn-Qp collectivity in the neutron-rich oxygen isotope 20 O

Abstract : By means of HFB calculations with independent constraints on axial neutron and proton quadrupole moments Q_n and Q_p, we investigate the large amplitude isoscalar and isovector deformation properties of the neutron-rich isotope 20O. Using the particle-number and angular-momentum projected Generator Coordinate Method, we analyze the collective dynamics in the {Q_n, Q_p} plane. The parameterization SLy4 of the Skyrme interaction is used for all calculations in connection with a density-dependent zero-range pairing interaction. Our results show that already for this moderately neutron-rich nucleus the transition moments are modified when independent neutron and proton collective dynamics are allowed.
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http://hal.in2p3.fr/in2p3-00138605
Contributor : Dominique Girod <>
Submitted on : Tuesday, March 27, 2007 - 9:04:43 AM
Last modification on : Wednesday, September 16, 2020 - 4:17:30 PM

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A. P. Severyukhin, M. Bender, H. Flocard, P.-H. Heenen. Large-amplitude Qn-Qp collectivity in the neutron-rich oxygen isotope 20 O. Physical Review C, American Physical Society, 2007, 75, pp.064303. ⟨10.1103/PhysRevC.75.064303⟩. ⟨in2p3-00138605⟩

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