Interfering doorway states and giant resonances. II. Transition strengths
- Budker Institute of Nuclear Physics, 630090 Novosibirsk (Russia)
- Forschungszentrum Rossendorf, Institut fuer Kern- und Hadronenphysik, D-01314 Dresden (Germany)
- Technische Universitaet Dresden, Institut fuer Theoretische Physik, D-01062 Dresden (Germany)
- Centro Internacional de Ciencias, Cuernavaca (Mexico)
The mixing of the doorway components of a giant resonance (GR) due to the interaction via common decay channels influences significantly the distribution of the multipole strength and the energy spectrum of the decay products of the GR. The concept of the partial widths of a GR becomes ambiguous when the mixing is strong. In this case, the partial widths determined in terms of the K and S matrices must be distinguished. The photoemission turns out to be most sensitive to the overlapping of the doorway states. At high excitation energies, the interference between the doorway states leads to a restructuring towards lower energies and apparent quenching of the dipole strength. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 528185
- Journal Information:
- Physical Review, C, Journal Name: Physical Review, C Journal Issue: 2 Vol. 56; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
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