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    Investigation of the Effects of Expectation Values for Radii on the Determination of Transition Probabilities using WBEPM Theory
    (INDIAN ACAD SCIENCES, 2008) Celik, Gueltekin; Ates, Sule
    Transition probabilities for some excited s-p and p-s transition arrays of neutral nitrogen have been calculated using the weakest bound electron potential model theory (WBEPMT) for the investigation of effects of expectation values of radii. We have used both numerical non-relativistic Hartree-Fock (NRHF) wave functions and numerical Coulomb approximation (NCA) wave functions to calculate expectation values of radii. The transition probability results obtained using the parameters determined with two different wave functions agree well with each other and accepted values taken from NIST for low values of transition probability. However, the NRHF wave functions present better results for p-s transitions, while NCA wave functions are better in s-p transitions for large values of transition probability.
  • Küçük Resim Yok
    Öğe
    Theoretical calculations of transition probabilities for individual and multiplet lines between some excited levels of atomic potassium
    (NATL RESEARCH COUNCIL CANADA-N R C RESEARCH PRESS, 2008) Celik, Gueltekin; Ates, Sule
    The transition probabilities for individual and multiplet lines between some excited levels of atomic potassium are calculated using weakest bound electron potential model theory (WBEPMT). The numerical nonrelativistic Hartree-Fock wave functions for the expectation values of radii in all excited states, unlike the Numerical Coulomb Approximation method traditionally used for WBEPMT and experimental ionization energies, have been employed to determine the parameters. The results obtained during this work agree very well with the accepted values taken from National Institute Standards and Technology. Moreover, some transition probabilities not existing on the data bases for highly excited levels in atomic potassium have been obtained using this method.