PaperPanorama
FAQ

Nuclear Theory·nucl-th

Wednesday·October 24, 2018

8 papers—4 primary·4 cross-listed

All8Primary4Cross-lists4
  1. 01

    Quadrupole Phonons in the Cadmium Isotopes

    A. Leviatan🇮🇱 · N. Gavrielov🇮🇱 · J.E. Garcia-Ramos🇪🇸 · P. Van Isacker🇫🇷

    A key question concerning the spherical-vibrator attributes of states in Cadmium isotopes is addressed by means of a boson Hamiltonian encompassing U(5) partial dynamical symmetry. The U(5) symmetry is preserved in a segment of the spectrum and is broken in particular non-yrast states, and the resulting mixing with the intruder states is small. The vibrational character is thus maintained in the majority of low-lying normal states, as observed in Cd.

    nucl-thPRC(2018)·49 citations
  2. 02

    One- and two- neutron halo at the dripline. From 11Be to 11Li and back: 10Li and parity inversion

    R. A. Broglia🇮🇹 · F. Barranco🇪🇸 · G. Potel🇺🇸 · E. Vigezzi🇮🇹

    The nuclei 11Be and 11Li provide paradigmatic examples of one-and two- neutron halo systems. Because the reaction 1H(11Li,9Li)3H is dominated by successive transfer, one can use the quantitative picture emerging from a nu- clear field theory description of the structure and reaction mechanism of the above Cooper pair transfer process and of the 2H(10Be,11Be)1H and 1H(11Be,10Be)2H reactions, to shed light on the structure of 10Li. This analysis provides important support for a parity inverted scenario with a 1/2+ virtual state at about 0.2 MeV.

    nucl-thnucl-exCERN Proc.(2019)·0 citations
  3. 03

    Skyrme functional with tensor terms from \textit{ab initio} calculations of neutron-proton drops

    Shihang Shen · Gianluca Colò · Xavier Roca-Maza

    A new Skyrme functional devised to account well for standard nuclear properties as well as for spin and spin-isospin properties is presented. The main novelty of this work relies on the introduction of tensor terms guided by \textit{ab initio} relativistic Brueckner-Hartree-Fock calculations of neutron-proton drops. The inclusion of tensor term does not decrease the accuracy in describing bulk properties of nuclei, experimental data of some selected spherical nuclei such as binding energies, charge radii, and spin-orbit splittings can be well fitted. The new functional is applied to the investigation of various collective excitations such as the Giant Monopole Resonance (GMR), the Isovector Giant Dipole Resonance (IVGDR), the Gamow-Teller Resonance (GTR), and the Spin-Dipole Resonance (SDR). The overall description with the new functional is satisfactory and the tensor terms are shown to be important particularly for the improvement of the Spin-Dipole Resonance results. Predictions for the neutron skin thickness based on the non-energy weighted sum rule of the Spin-Dipole Resonance are also given.

    nucl-thPRC(2019)·45 citations
  4. 04

    Neutrino recoil force in electron-capture decay of polarized nuclei: measurement prospects and potential applications

    A.L. Barabanov🇷🇺 · O.A. Titov🇷🇺

    Due to a directional asymmetry of neutrino emission caused by parity violation, a sample of radioactive atoms experiences a small recoil force from neutrino radiation accompanying electron capture by polarized nuclei. An expression for this force is obtained for the case of allowed nuclear transitions. Prospects to measure this force by the use of modern micromechanical devices are considered. Numerical estimates for the force are presented for a number of most suitable radioactive isotopes. Potential applications for the weak interaction studies are discussed including the possibility to search for hypothetical Lorentz invariance violation.

    nucl-thhep-phnucl-exPRC(2019)·3 citations

Affiliations

first authorsco-authorsvia INSPIRE