Abstract
The excitation and subsequent decay by proton emission of the isovector spin-flip giant monopole resonance are studied via the208Pb(3He,t) reaction at 410 MeV. In the triton-singles spectrum 60 ± 5% of the non-energy-weighted sum-rule strength for this 2ħω resonance is found in the region29 < Ex(208Bi) < 51 MeV. The central excitation energy and width of the IVSGMR are determined to be 37 ± 1 MeV and 14 ± 3 MeV, respectively.
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