A high-resolution experiment has been performed in order to confirm the existence of the low-energy octupole resonance (LEOR) in Pb208. Until now there was a puzzling discrepancy; an experiment denied the existence, while a (p,p) measurement affirmed it. The present reaction with an improved resolution of 27 keV has identified clustering L=3 levels in the LEOR regionin agreement with the former (p,p) measurement. The observed strength, however, is weaker than the (p,p) results, suggesting the coexistence of the isovector strength.
ASJC Scopus subject areas
- Nuclear and High Energy Physics