Abstract
The dipole strength function of 78 Se and 196 Pt are investigated by two different experimental methods, capture of cold neutrons in 77 Se and 195 Pt and photon scattering experiments on 78 Se and 196 Pt. Considering the different ways of excitation, the strength function deduced from the results are expected to agree.The report shows the status of the data analysis and presents first preliminary results.
Highlights
The electric dipole strength of nuclei has a large resonance at excitation energies of about 10–20 MeV, the well known giant dipole resonance (GDR)
After the capture of a cold neutron the nuclei stay in an excited state, which decays via one or more steps back to the ground state
These transition are detected with a high-purity germanium (HPGe) detector, which was brought from FZD to Budapest to ensure equal conditions in photon detection
Summary
The electric dipole strength of nuclei has a large resonance at excitation energies of about 10–20 MeV, the well known giant dipole resonance (GDR). At the superconducting electron accelerator ELBE of the research center Dresden-Rossendorf, a bremsstrahlung facility [9] exists, which opens up to study dipole excitations up to the highest neutron separation energies. Two stable nuclei are needed, one with ground state for neutron capture and one with JP = 0+ for the scattering experiment.
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