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Astana, Kazakhstan

Hamada S.,Kazakh National University | Burtebayev N.,Institute of Nuclear Physics of Kazakhstan | Amangeldi N.,Eurasia National University | Amar A.,Kazakh National University
World Academy of Science, Engineering and Technology | Year: 2011

An experiment was performed with a 24.5 MeV 14N beam on a 12C target in the cyclotron DC-60 located in Astana, Kazakhstan, to study the elastic scattering of 14N on 12C; the scattering was also analyzed at different energies for tracking the phenomenon of remarkable structure at large angles. Its aims were to extend the measurements to very large angles, and attempt to uniquely identify the elastic scattering potential. Good agreement between the theoretical and experimental data has been obtained with suitable optical potential parameters. Optical model calculations with l-dependent imaginary potentials were also applied to the data and relatively good agreement was found. Source


Gridnev K.A.,Saint Petersburg State University | Burtebayev N.,Institute of Nuclear Physics of Kazakhstan | Maltsev N.A.,Saint Petersburg State University | Amangeldi N.,Eurasia National University | Hamada S.,Kazakh National University
Bulletin of the Russian Academy of Sciences: Physics | Year: 2011

The main aim of this work was to describe the reactions of elastic scattering of 16O + 12C over a wide range of energies in an optical model with an l-dependent core. We obtained a value for the compress- ibility coefficient that agreed with the one found from data on the giant monopole resonance. We considered the elastic transfer of an α particle to reproduce the cross section in the reverse hemisphere. © 2011 Allerton Press, Inc. Source


Hamada S.H.,Kazakh National University | Hamada S.H.,Tanta University | Burtebayev N.,Kazakh National University | Gridnev K.A.,Saint Petersburg State University | Amangeldi N.,Eurasia National University
Physica Scripta | Year: 2011

The angular distribution for the elastic scattering of 16O, 14N and 12C on 27Al was measured at an energy of 1.75 MeV per nucleon in the DC-60 INP NNC (Institute of Nuclear Physics, National Nuclear Centre) cyclotron located in Astana in order to study the elastic scattering mechanism in these nuclear systems. The experimental results were analyzed with the help of the optical potential code SPI-GENOA. Good agreement between the experimental data and the theoretical calculations was obtained by using suitable optical potential parameters. The elastic scattering of 16O, 14N and 12C on 27Al does not reveal any unusual features or threshold anomaly at this energy. © 2011 The Royal Swedish Academy of Sciences. Source


Hamada S.,Kazakh National University | Burtebay N.,Institute of Nuclear Physics of Kazakhstan | Amangeldi N.,Eurasia National University | Amar A.,Kazakh National University
World Academy of Science, Engineering and Technology | Year: 2011

The aim of this work is to study the elastic transfer phenomenon which takes place in the elastic scattering of 16O on 12C at energies near the Coulomb barrier. Where, the angular distribution decrease steadily with increasing the scattering angle, then the cross section will increase at backward angles due to the α-transfer process. This reaction was also studied at different energies for tracking the nuclear rainbow phenomenon. The experimental data of the angular distribution at these energies were compared to the calculation predictions. The optical potential codes such as SPIVAL and Distorted Wave Born Approximation (DWUCK5) were used in analysis. Source


Amar A.,Kazakh National University | Burtebayev N.,Institute of Nuclear Physics of Kazakhstan | Zhambul K.,Institute of Nuclear Physics of Kazakhstan | Hamada S.,Kazakh National University | Amangeldi N.,Eurasia National University
World Academy of Science, Engineering and Technology | Year: 2011

the elastic scattering of protons, deuterons and 3He on 6Li at different incident energies have been analyzed in the framework of the optical model using ECIS88 as well as SPI GENOA codes. The potential parameters were extracted in the phenomenological treatment of measured by us angular distributions and literature data. A good agreement between theoretical and experimental differential cross sections was obtained in whole angular range. Parameters for real part of potential have been also calculated microscopically with singleand double-folding model for the p and d, 3He scattering, respectively, using DFPOT code. For best agreement with experiment the normalization factor N for the potential depth is obtained in the range of 0.7-0.9. Source

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