Abstract
High energy γ rays from the decay of the giant dipole resonance built on highly excited states in Yb164 at Eex=49 MeV formed in two different reactions have been measured. While standard statistical model calculations can describe the γ-ray spectrum from the O16 + Sm148 reaction they fail to reproduce the γ-ray spectra from the more symmetric reaction Ni64 + Mo100. Simple model calculations which include particle evaporation and γ-ray decay during the formation process suggest that the observed differences may be related to a long fusion time in the more symmetric reaction.
Original language | English |
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Pages (from-to) | 4055-4058 |
Number of pages | 4 |
Journal | Physical Review Letters |
Volume | 70 |
Issue number | 26 |
DOIs | |
State | Published - 1993 |