Determination of the Astrophysical S-factor and Thermonuclear Reaction Rates of the (α,n) Medium Elements Reactions

  • Mohammed Issa Hussein Department of Physics, College of Science, Salahaddin University-Erbil, Kurdistan Region, Iraq
  • Ramadhan Hayder Abdullah Department of Physics, College of Science, Salahaddin University-Erbil, Kurdistan Region, Iraq
Keywords: Cross sections; astrophysical S-factor; thermonuclear reaction rates; Gamow factor;

Abstract

respectively. Polynomial relationships have been utilized to fit the computed astrophysical S-factor and thermonuclear reaction rates to determine the astrophysical S-factor at various Ec.m. and thermonuclear reaction rates at various T9 from best fitting equations with the minimum Chi-Square. Empirical formulae of  set of reactions 45Sc(α,n)48V , 48Ti(α,n)51Cr  ,  51V(α,n)54Mn , 55Mn(α,n)58Co   , 59Co(α,n)62Cu  , and  45Sc(α,n)48V , 48Ti(α,n)51Cr  ,  51V(α,n)54Mn , 55Mn(α,n)58Co  , 62Ni(α,n)65Zn  , 66Zn(α,n)69Ge have been utilized to compute astrophysical S-factor as a function of Ec.m. and Z and thermonuclear reaction rates  as a function of T9 and the target nucleus atomic number Z. The results have been compared with the embraced astrophysical S-factor and thermonuclear reaction rates that have been calculated from the fitting equations which have a good agreement.

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Published
2020-04-22
How to Cite
Hussein, M. and Hayder Abdullah, R. (2020) “Determination of the Astrophysical S-factor and Thermonuclear Reaction Rates of the (α,n) Medium Elements Reactions”, Zanco Journal of Pure and Applied Sciences, 32(2), pp. 72-86. doi: 10.21271/ZJPAS.32.2.8.
Section
Mathematics ,Physics and Engineering Researches