Study of Properties for Ca (a, n)Ti Reactions and n-Yield for Ca Isotopes (A=41-50)

In this study, (44Ti – 53Ti) isotopes for one of intermediate elements (A>40) from Ca (?, n)Ti reactions with alpha energy from (10 to 50) MeV are used according to the available data of reaction cross sections obtained from Lab (TENDL-2012). The more recent cross sections data of Ca (?, n)Ti reaction is reproduced in fine steps of (0.5MeV), by using (MATLAB R2008b) program. These cross sections together with the stopping powers which calculated from the Zeigler formula by using SRIM-2013 have been used to calculate the n-yield for reaction by depend on Ca isotopes (41Ca – 50Ca) as targets, and then clarify the behavior between the energies which corresponding to these cross sections and neutron yield for isotopes, and then we drowned the relationship between the n-yield for these reactions and symmetry at these energies. Was obtained on mathematical formulas and find constants those equations and these equations were calculated yield neutron and comparing with theoretical values ??also studying the properties of these isotopes, calculated binding energy and reduced mass and also were calculated Q- value and threshold energy for each reaction and the relative abundance of the isotopes of entering and leaving for alpha reactions. And then drawing scheduled and discusses the results. Keyword: Binding energy, Cross-Section, Neutron Yield, stopping power, Asymmetry and empirical formula.

Calculation the Cross Sections for64Cu(n,p)64Ni Reaction By Reciprocity Theory

In this study intermediate elements 64Ni , 64Cu for 64Ni (p,n)64Cu reaction with proton energy from (1.0) MeV to (132) MeV with threshold energy (2.496) MeV are used according to the available data of reaction cross sections. We calculated the cross sections for 64Cu(n,p)64Ni reaction by application in nuclear technology (reciprocity theory). In reciprocity theory we derive the mathematical formula for 64Cu(n,p)64Ni and we deduced high probability to produced 64Ni because it is very important such as it used in technology field .The evaluated cross sections as a functions of neutron energy between (En =0.504MeV) to (En=129.506MeV) of (0.0106barn) (0.254barn) respectively and statistical factor (gp,n=1 and gn,p=1/3)

Cross Sections Calculations of 33S(n,α)30Si reaction by using the inverse reaction for the first exited state

In this study light elements 30Si , 33S for 30Si(α,n)33S reaction as well as α-particle energy from (5.001) MeV to (6.284) MeV are used according to the available data of reaction cross sections with threshold energy (3.959MeV). The more recent cross sections data of 30Si(α,n)33S reaction is reproduced in fine steps in the specified energy range , as well as cross section (α,n) values were derived from the published data of (n,α) as a function of energy in the same fine energy steps by using the principle of inverse reaction . This calculations involves the first exited state of 30Si , 33S in the reactions 30Si(α,n)33S and 33S(n,α)30Si . These data are listing , plotted and dissection