The γ-decay of the anti-analog of the giant dipole resonance (AGDR) to the isobaric analog state has been measured following the reaction at a beam energy of 600 MeV/nucleon. The energy of the transition was also calculated with state-of-the-art self-consistent relativistic random-phase approximation (RPA) and turned out to be very sensitive to the neutronskin thickness (). By comparing the theoretical results with the measured one, the value for was deduced to be 0.21 ± 0.07 fm, which agrees well with the previous results. The present method offers new possibilities for measuring the neutron-skin thicknesses of very exotic isotopes.
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© 2012 American Institute of Physics.
2012
American Institute of Physics
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