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

Spieker, M.; Heusler, A.; Brown, B. A.; Faestermann, T.; Hertenberger, R.; Potel, G.; Scheck, M.; Tsoneva, N.; Weinert, M.; Wirth, H-F und Zilges, A. (2020): Accessing the Single-Particle Structure of the Pygmy Dipole Resonance in Pb-208. In: Physical Review Letters, Bd. 125, Nr. 10, 102503

Abstract

New experimental data on the neutron single-particle character of the Pygmy Dipole Resonance (PDR) in Pb-208 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 Pb-208 and establish (d, p) as an additional, valuable, experimental probe to study the PDR and its collectivity. 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 Pb-208.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Physik
• Themengebiete: 500 Naturwissenschaften und Mathematik > 530 Physik
• ISSN: 0031-9007
• Sprache: Englisch