Browsing by Author "Küçükbursa A."

Now showing 1 - 7 of 7
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    Nuclear matrix elements of double beta decay in deformed nuclei
    (2003) Selam C.; Küçükbursa A.; Bircan H.; Aygör H.A.; Babacan T.; Maraş I.; Kökçe A.
    Nuclear matrix elements (MGT for two-neutrino double beta transitions of selected nuclei were calculated via a QRPA approach by considering the charge-exchange spin-spin interactions in the particle-hole channel among nucleons. Calculations were performed for both spherical and deformed cases of nuclei. As a result of these calculations, it has been seen that, although the value of the nuclear matrix elements in deformation case are 2-4 times smaller when compared with that of the spherical case, it is still 2-8 times greater than the experimental values.
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    The investigation of the log(ft) values for the allowed Gamow-Teller transitions of some deformed nuclei
    (Association for Scientific Research, 2004) Selam C.; Babacan T.; Aygör H.A.; Bircan H.; Küçükbursa A.; Maraş I.
    The log(ft) values of allowed β± decay between odd-A nuclei for 125≤A≤180 mass region are investigated. Single particle energies and wave functions are calculated by making use of a deformed Woods-Saxon potential. The calculations are performed in the framework of proton-neutron quasi particle random phase approximation (QRPA) including the schematic residual spin-isospin interaction among the nucleons in the particle hole channel. The calculations indicated that the results obtained through using the ΧGT=5.2/A0.7 are more in agreement with experimental observations.
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    An investigation of the Gamow-Teller 1+ states in 90Nb isotopes
    (Association for Scientific Research, 2005) Babacan T.; Salamov D.I.; Küçükbursa A.
    In this study, based on Pyatov-Salamov method, the properties of the Gamow-Teller(GT) 1+ states in 90Nb have been investigated and the agreement of our results calculated by this method for the energy of Gamow-Teller Resonance (GTR) and the corresponding strengths of the 1 + excitations in 90Nb with the experimental values has been tested. As a result of the calculations, it was seen that the calculated values for the energy and strength of the GTR are sufficiently in agreement with the experimental ones. © Association for Scientific Research.
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    Gamow-Teller 1+ states in 208Bi
    (American Physical Society, 2005) Babacan T.; Salamov D.I.; Küçükbursa A.
    The properties of the Gamow-Teller (GT) 1+ states in 208Bi have been investigated by using the Pyatov-Salamov method. The GT resonance (GTR) energy, the contribution of the GTR β transition strength to the Ikeda sum rule, and the differential cross sections for the 208Pb(p, n)208Bi and 208Pb(3He, t)208Bi charge exchange reactions at different energies have been calculated. Our results show good agreement with experimental values. © 2005 The American Physical Society.
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    IBM-1 calculations on the even-even 122-128Te isotopes
    (Association for Scientific Research, 2005) Küçükbursa A.; Manisa K.; Çiftçi M.; Babacan T.; Maraş I.
    The 122-128Te isotopes in O(6)- SU(5) transition region were investigated. For these nuclei, the energy levels, B(E2) transition probabilities, and δ(E2/M1) mixing ratios were calculated within framework of the Interacting Boson Model (IBM-1). The results are compared with the experimental data and the previous calculations. It is shown that there is a good agreement between the results found and especially with the experimental ones.
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    Calculation of two neutrino double beta decay nuclear matrix elements for 128,130Te
    (2006) Ünlü S.; Salamov D.I.; Babacan T.; Küçükbursa A.
    Based on Pyatov-Salamov method, spin-isospin (Gamow-Teller) effective interaction strength parameter has been found self-consistently. Then, the problem has been solved within the framework of QRPA. Gamow-Teller matrix elements for both β- and β+ transitions and two neutrino double beta decay nuclear matrix elements have been calculated for 128,130Te→128,130Xe transitions. The obtained results have been compared with the corresponding experimental data and other theoretical results. © 2006 American Institute of Physics.
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    A new expression for radial distribution function of nuclear matter
    (Association for Scientific Research, 2011) Manisa F.; Küçükbursa A.; Manisa K.; Babacan T.
    A Variational Monte Carlo Method (VMC) is used for the calculations of radial distribution function of nuclear matter. Urbana 14 v potential is used for the nucleon-nucleon interactions in the calculations. The new expression for radial distribution function of nuclear matter is obtained by fitting of Monte Carlo simulations results to a function. Copyright © Association for Scientific Research.