Yazar "Ogul, R" seçeneğine göre listele

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  • Küçük Resim
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    Isospin and symmetry energy effects on nuclear fragment production in liquid-gas-type phase transition region
    (SPRINGER, 2005) Buyukcizmeci, N; Ogul, R; Botvina, AS
    We have shown that the isospin of nuclei influences the fragment production during the nuclear liquid-gas phase transition. Calculations for Au-197, Sn-124, La-124 and Kr-78 at various excitation energies were carried out on the basis of the statistical multifragmentation model (SMM). We analyzed the behavior of the critical exponent T with the excitation energy and its dependence on the critical temperature. Relative yields of fragments were classified with respect to the mass number of the fragments in the transition region. In this way, we have shown that nuclear multifragmentation exhibits a "bimodality" behavior. We have also shown that the symmetry energy has a small influence on fragment mass distribution; however, its effect is more pronounced in the isotope distributions of produced fragments.
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    Nuclear fragmentation and critical temperature for the liquid-gas phase transition region
    (ELSEVIER SCIENCE BV, 2005) Ogul, R; Buyukcizmeci, N; Botvina, AS
    We have investigated the evolution of fragment mass and charge distributions for Au-197, Sn-124 and La-124 nuclei, in the excitation energy range 2 - 12 MeV/nucleon. It is seen that isospin of a nucleus and critical temperature of nuclear matter is highly effective on the multifragmentation phenomena in the phase transition region of finite nuclei.
  • Küçük Resim
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    VMC calculations of the ground state properties of nuclear matter
    (WORLD SCIENTIFIC PUBL CO PTE LTD, 2005) Manisa, K; Atav, U; Ogul, R
    A Variational Monte Carlo method (VMC) is described for the evaluation of the ground state properties of nuclear matter. Equilibrium properties of symmetric nuclear matter and neutron matter are calculated by the described VMC method. The Urbana v(14) potential is used for the nucleon-nucleon interactions in the calculations. Three- and more-body interactions are included as a density dependent potential term. Total, kinetic and potential energies per particle axe obtained for nuclear and neutron matter. Pressure values of nuclear and neutron matter are also calculated at various densities. The binding energy of nuclear matter is found to be -16.06 MeV at a saturation density of 0.16 fm(-3). The results obtained are in good agreement with those obtained by various authors with different potentials and techniques.