Erlangen 2026 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
HK: Fachverband Physik der Hadronen und Kerne
HK 5: Structure and Dynamics of Nuclei II
HK 5.7: Talk
Monday, March 16, 2026, 18:15–18:30, AM 00.021
Low-Lying Dipole Strength in 144Nd and 142Ce studied via Nuclear Resonance Fluorescence — •Florian Kluwig1, Deniz Savran2, Tanja Schüttler1, Ronald Schwengner3, and Andreas Zilges1 — 1University of Cologne, Institute for Nuclear Physics, Germany — 2GSI, Darmstadt, Germany — 3Helmholtz-Zentrum Dresden-Rossendorf, Germany
The Pygmy Dipole Resonance (PDR) constitutes a low-energy excitation component within the electric dipole response of atomic nuclei. Despite extensive experimental and theoretical efforts over several decades [1-3], the structure and precise origin of the PDR remain subjects of ongoing investigation. Systematic studies, particularly along isotopic and isotonic chains, serve to resolve these open questions. Our work focuses on the N=84 isotones, 144Nd and 142Ce, situated near the N=82 magic shell closure. These nuclei were probed using the Nuclear Resonance Fluorescence (NRF) technique, based on real-photon scattering. Given their low-angular-momentum transfer capability, real photons are uniquely effective probes for isolating and characterizing the PDR strength [4]. This contribution presents and compares NRF data obtained for 144Nd and 142Ce, thereby contributing to the understanding of the PDR systematics in this mass region. Supported by the DFG (ZI510/10-2).
[1] D. Savran et al., Prog. Part. Nucl. Phys. 70 (2013) 210.
[2] A. Bracco et al., Prog. Part. Nucl. Phys. 106 (2019) 360.
[3] E.G. Lanza et al., Prog. Part. Nucl. Phys. 129 (2023) 104006.
[4] A. Zilges et al., Prog. Part. Nucl. Phys. 122 (2022) 103903.
Keywords: Pygmy Dipole Resonance; Nuclear Resonance Fluorescence; Neodymium; Cerium