Accessing the Single-Particle Structure of the Pygmy Dipole Resonance in 208Pb

New experimental data on the neutron single-particle character of the Pygmy Dipole Resonance (PDR) in Pb208 are presented. They were obtained from ( d,p ) and resonant proton scattering experiments performed at the Q3D spectrograph of the Maier-Leibnitz Laboratory in Garching, Germany. The new data...

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Bibliographic Details
Published in:Physical review letters 2020-09, Vol.125 (10)
Main Authors: Spieker, M., Heusler, A., Brown, B.  A., Faestermann, T., Hertenberger, R., Potel, G., Scheck, M., Tsoneva, N., Weinert, M., Wirth, H. -F., Zilges, A.
Format: Article
Language:English
Subjects:
Collective levels
Direct reactions
Nuclear density functional theory
NUCLEAR PHYSICS AND RADIATION PHYSICS
Nuclear reactions
Nuclear structure & decays
Shell model
Spectrometers & spectroscopic techniques
Transfer reactions
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Summary:New experimental data on the neutron single-particle character of the Pygmy Dipole Resonance (PDR) in Pb208 are presented. They were obtained from ( d,p ) and resonant proton scattering experiments performed at the Q3D spectrograph of the Maier-Leibnitz Laboratory in Garching, Germany. The new data are compared to the large suite of complementary, experimental data available for Pb208 and establish ( d,p ) as an additional, valuable, experimental probe to study the PDR and its collectivity. Furthermore, besides the single-particle character of the states, different features of the strength distributions are discussed and compared to large-scale shell model (LSSM) and energy-density functional plus quasiparticle-phonon model theoretical approaches to elucidate the microscopic structure of the PDR in Pb208 .
ISSN:0031-9007
1079-7114