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arXiv · 1308.3637

Neutron-skin thickness of 208Pb from the energy of the anti-analog giant dipole resonance

A. Krasznahorkay·N. Paar·D. Vretenar·M. N. Harakeh
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Abstract

The energy of the charge-exchange Anti-analog Giant Dipole Resonance (AGDR) has been calculated for the 208Pb isotope using the state-of-the-art fully self-consistent relativistic proton-neutron quasiparticle random-phase approximation based on the Relativistic Hartree-Bogoliubov model. It is shown that the AGDR centroid energy is very sensitively related to the corresponding neutron-skin thickness. The neutron-skin thickness of 208Pb has been determined very precisely by comparing the theoretical results with the available experimental data on E(AGDR). The result DR(pn)= 0.161(42) agrees nicely with the previous experimental results.

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A. Krasznahorkay, N. Paar, D. Vretenar, M. N. Harakeh. 2013-08-16. Neutron-skin thickness of 208Pb from the energy of the anti-analog giant dipole resonance. https://doi.org/10.1088/0031-8949%2F2013%2Ft154%2F014018

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