Isoscalar breathing-mode state in /sup 144/Sm and /sup 208/Pb
作者： D. H. Youngblood , C. M. Rozsa , J. M. Moss , D. R. Brown , J. D. Bronson
DOI: 10.1103/PHYSREVLETT.39.1188
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摘要: Elastic ..cap alpha..-scattering experiments have been performed on /sup 144/Sm and 208/Pb at E/sub b/MeV over the angular range 3/sup 0/ < or = theta/sub L/ 8/sup 0/. It is apparent that isoscalar giant resonance in these nuclei consists of least two broad components. The distribution for one component (/sup 144/SmEx approx. 12.4 MeV, 208/PbE/sub x/ 11.0 MeV) well described as E2, while other 144/SmE/sub 15.1 13.7 by an E0 excitation exhausting approximately 100% energy-weighted sum rule.
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