Now showing items 21-27 of 27

    • Modalities for an Allegorical Conceptual Data Model 

      Zielińsk, Bartosz; Maślanka, Paweł; Sobieski, Ścibor (MDPI AG, 2014)
      Allegories are enriched categories generalizing a category of sets and binary relations. In this paper, we extend a new, recently-introduced conceptual data model based on allegories by adding support for modal operators ...
    • β decay of 6He into the α+d continuum 

      Pfutzner, M.; Dominik, W.; Janas, Z.; Mazzocchi, C.; Pomorski, M.; Bezbakh, A. A.; Borge, M. J. G.; Chrapkiewicz, K.; Chudoba, V.; Frederickx, R.; Kaminski, G.; Kowalska, M.; Krupko, S.; Kuich, M.; Kurcewicz, J.; Lis, A. A.; Lund, M. V.; Miernik, K.; Perkowski, J.; Raabe, R.; Randisi, G.; Riisager, K.; Sambi, S.; Tengblad, O.; Wenander, F. (American Physical Society, 2015)
      The rare β-decay channel of 6He into the α+d continuum was investigated at the REX-ISOLDE facility. Bunches of postaccelerated 6He ions were implanted into the optical time projection chamber (OTPC), where the decays with ...
    • Generalized Niederer’s transformation for quantum Pais–Uhlenbeck oscillator 

      Andrzejewski, Krzysztof (Elsevier B.V., 2015)
      We extend, to the quantum domain, the results obtained in [Nucl. Phys. B 885 (2014) 150] and [Phys. Lett. B 738 (2014) 405] concerning Niederer’s transformation for the Pais–Uhlenbeck oscillator. Namely, the quantum ...
    • Modification of thin films induced by slow heavy ions analysed with PIXE and SRIM 

      Antoszewska-Moneta, Malgorzata; Brzozowski, Romuald; Moneta, Marek (Springer, 2015-03-17)
      In the present work the particle induced X-rays (PIXE) emitted during interaction of inert and active slow heavy (HI) ions with specially prepared thin films were measured. Kinematics of the interaction was simulated ...
    • Chiral fermions, massless particles and Poincare covariance 

      Andrzejewski, Krzysztof; Kijanka-Dec, Agnieszka; Kosiński, Piotr; Maślanka, Paweł (Elsevier, 2015-05-19)
      The coadjoint orbit method is applied to the construction of Hamiltonian dynamics of massless particles of arbitrary helicity. The unusual transformation properties of canonical variables are interpreted in terms of nonlinear ...
    • Elastic scattering in geometrical model 

      Plebaniak, Zbigniew; Wibig, Tadeusz (Elsevier B.V., 2016)
      The experimental data on proton–proton elastic and inelastic scattering emerging from the measurements at the Large Hadron Collider, calls for an efficient model to fit the data. We have examined the optical, geometrical ...
    • The X/gamma-ray correlation in NGC 4945 and the nature of its gamma-ray source 

      Wojaczyński, Rafał; Niedźwiecki, Andrzej (IOP Publishing for the American Astronomical Society, 2017)
      We report hints for the correlation between the X-ray and gamma-ray emission in the nearby galaxy NGC 4945, which harbors both an active galactic nucleus and a nuclear starburst region. We have divided the Fermi/LAT ...