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HK: Fachverband Physik der Hadronen und Kerne
HK 28: Structure and Dynamics of Nuclei VIII
HK 28.2: Vortrag
Mittwoch, 12. März 2025, 16:15–16:30, HS 2 Physik
Dipole response of the N=84 isotones 142Ce and 144Nd — •Florian Kluwig1, Miriam Müscher1, Deniz Savran2, Ronald Schwengner3, Tanja Schüttler1, and Andreas Zilges1 — 1University of Cologne, Institute for Nuclear Physics, Germany — 2GSI, Darmstadt, Germany — 3Helmholtz-Zentrum Dresden-Rossendorf, Germany
The Pygmy Dipole Resonance (PDR) is a component of the electric dipole response in atomic nuclei. Despite decades of extensive theoretical and experimental investigations [1-3], its structure and origin remain the subject of ongoing research. To address these unresolved questions, systematic studies, e.g. along isotopic or isotonic chains, are essential for deepening our understanding of this excitation mode. Such investigations have been conducted on isotopes near the N=82 magic shell closure, including the N=84 isotones 144Nd and 142Ce, through real-photon scattering experiments known as Nuclear Resonance Fluorescence (NRF). Photons are particularly effective probes for studying the PDR due to their ability to transfer only small angular momenta [4]. In this contribution, results from NRF experiments on 144Nd and 142Ce will be presented and compared.
This work was partly supported by the BMBF (05P21PKEN9).
[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: Nuclear Resonance Fluorescence; Pygmy Dipole Resonance; Neodymium; Cerium