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HK: Fachverband Physik der Hadronen und Kerne

HK 14: Structure and Dynamics of Nuclei IV

HK 14.4: Talk

Tuesday, March 17, 2026, 17:15–17:30, AM 00.021

Nuclear structure in heavy neutron-rich nuclei in the vicinity of N=126 and northwest of ¹³²Sn via multinucleon-transfer reactions — •Rainer Abels and Peter Reiter for the AGATA22.04 collaboration — IKP, Universität zu Köln, Germany

Multinucleon-transfer (MNT) reactions offer a powerful tool to access to access exotic neutron-rich nuclei. Excited reaction products from the ¹³⁶Xe + ²⁰⁸Pb system at 1 GeV were investigated using the high-resolution γ-ray tracking array AGATA coupled to the mass spectrometer PRISMA at LNL, Italy positioned at the grazing angle. For the beam-like fragments, energy E, atomic number Z, velocity β, charge state q, and mass number A were measured over the range Z=52-58, enabling a clean selection of the nuclei of interest. Kinematic coincidences were exploited to enhance the identification of the hard-to-reach neutron-rich lead isotopes on the target-like side. Mass-yield distributions have been extracted and compared with calculations from the GRAZING model for MNT reactions. Based on the relative cross-section systematics for different transfer channels, the capabilities and limitations for the production of the hard-to-reach neutron-rich isotopes with this experimental method will be discussed. Preliminary results on excited states of beam-like nuclei in the Xe-Ba mass region will also be presented.
Supported by the German BMBF under 05P21PKFN9 and ENSAR2-TNA.

Keywords: Nuclear structure; AGATA; PRISMA