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Nuclear Theory·nucl-th

Monday·April 20, 2020

8 papers—3 primary·5 cross-listed

All8Primary3Cross-lists5
  1. 01

    Discrete symmetries in the cluster shell model

    A.H. Santana-Valdés · R. Bijker

    The role of discrete (or point-group) symmetries is discussed in the framework of the Cluster Shell Model which describes the splitting of single-particle levels in the deformed field of cluster potentials. We discuss the classification of the eigenstates for the cases of a triangular and tetrahedral configuration of alpha-particles in terms of the irreducible representations of the double point groups D'(3h) and T'(d), respectively, and show how the discrete symmetry of a given eigenstate can be determined. Finally, we derive the Coriolis coupling for each one of these geometrical configurations.

    nucl-thnucl-exEur.Phys.J.ST(2020)·4 citations
  2. 02

    Exploring laser-driven neutron sources for neutron capture cascades and the production of neutron-rich isotopes

    Paul Hill · Yuanbin Wu

    The production of neutron-rich isotopes and the occurrence of neutron capture cascades via laser-driven (pulsed) neutron sources are investigated theoretically. The considered scenario involves the interaction of a laser-driven neutron beam with a target made of a single type of seed nuclide. We present a comprehensive study over seed nuclides in the range from Li to Fm. For each element, the heaviest sufficiently-long-lived (half life h) isotope whose data is available in the recent ENDF-B-VIII.0 neutron sublibrary is considered. We identify interesting seed nuclides with good performance in the production of neutron-rich isotopes where neutron capture cascades may occur. The effects of the neutron number per pulse, the neutron-target interaction size and the number of neutron pulses are also analyzed. Our results show the possibility of observing up to successive neutron capture events leading to neutron-rich isotopes with more neutrons than the original seed nuclide. This hints at new experimental possibilities to produce neutron-rich isotopes and simulate neutron capture nucleosynthesis in the laboratory. With several selected interesting seed nuclides in the region of the branching point of the -process (Sb, Lu and Re) or the waiting point of the -process (Lu, Re, Os, Tm, Ir and Au), we expect that laser-driven experiments can shed light on our understanding of nucleosynthesis.

    nucl-thPRC(2021)·12 citations
  3. 03

    Femtoscopic correlations and the interaction

    J. Haidenbauer🇩🇪 · G. Krein🇧🇷 · T. C. Peixoto🇧🇷

    We study the prospects for deducing constraints on the interaction of charmed baryons with nucleons from measurements of two-particle momentum correlation functions for . The correlation functions are calculated for and interactions that have been extrapolated from lattice QCD simulations at unphysical masses of MeV to the physical point using chiral effective field theory as guideline. In addition, we consider phenomenological models from the literature to explore the sensitivity of the results to the properties of the interaction in detail. We find that a measurement of the correlation functions could indeed allow one to discriminate between strongly attractive forces, as predicted by some phenomenological models, and a weakly attractive interaction as suggested by the presently available lattice simulations.

    nucl-thhep-phEPJA(2020)·22 citations

Affiliations

first authorsco-authorsvia INSPIRE