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Structure of the Isovector Dipole Resonance in Neutron-Rich $^{60}Ca$ Nucleus and Direct Decay from Pygmy Resonance

T. N. Leite·N. Teruya
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Abstract

The structure of the isovector dipole resonance in neutron-rich calcium isotope, $^{60}Ca$, has been investigated by implementing a careful treatment of the differences of neutron and proton radii in the continuum random phase approximation ($RPA$). The calculations have taken into account the current estimates of the neutron skin. The estimates of the escape widths for direct neutron decay from the pygmy dipole resonance ($PDR$) were shown rather wide, implicating a strong coupling to the continuum. The width of the giant dipole resonance ($GDR$) was evaluated, bringing on a detailed discussion about its microscopic structure.

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T. N. Leite, N. Teruya. 2004-09-23. Structure of the Isovector Dipole Resonance in Neutron-Rich $^{60}Ca$ Nucleus and Direct Decay from Pygmy Resonance. https://doi.org/10.1140/epja%2Fi2003-10221-1

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