Darmstadt 2016 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 12: Structure and Dynamics of Nuclei III

HK 12.1: Gruppenbericht

Montag, 14. März 2016, 16:30–17:00, S1/01 A03

Spectroscopy of light and heavy transfer products following multinucleon transfer reactions — •Andreas Vogt¹, Benedikt Birkenbach¹, Peter Reiter¹, Lorenzo Corradi², Daniele Montanari³, and Suzana Szilner⁴ for the LNL 11.22 collaboration — ¹IKP, Universität zu Köln — ²INFN - LNL, Italy — ³INFN Padova, Italy — ⁴RBI Zagreb, Croatia

Multinucleon transfer reactions (MNT) are a competitive tool to populate exotic neutron-rich nuclei. Excited reaction products have been measured in ¹³⁶Xe + ²³⁸U at 1 GeV with the high-resolution γ-ray tracking array AGATA coupled to the mass spectrometer PRISMA at LNL (INFN, Italy). Fission and transfer events are discriminated by exploiting kinematic coincidences between the binary reaction products. Mass yields have been extracted and compared with calculations based on the GRAZING model for MNT reactions. Population yields for nuclei in the actinide region were obtained and compared to x-ray yields measured by AGATA. Nuclear structure information of neutron-rich actinide nuclei are a benchmark for theoretical models providing predictions for the heaviest nuclei. An extension of the ground-state rotational band in ²⁴⁰U was achieved and evidence for an extended first negative-parity band in ²⁴⁰U is found. The results are compared to recent mean-field and DFT calculations. Based on relative cross-section distributions for various reaction channels, perspectives and limitations for the production of the hard-to-reach neutron-rich isotopes with this experimental method will be presented. Supported by the German BMBF (05P12PKFNE TP4), ENSAR-TNA03, BCGS.