وفاء نصيف جاسم ابو رقيبة

In this research, we conducted a theoretical study to calculate the stopping power of protons in aluminum, copper, and lead for energy ranges between 0.2 and 2.0 MeV. We used SRIM 2013 software to extract the stopping power values, and then numerically fitted these values using MATLAB 2015 to obtain a semi-empirical stopping power equation that describes the behavior of the stopping power with energy. The results of the proposed equation were compared with standard PSTAR data, and the comparison showed good agreement within acceptable deviation limits for most energy points. These results confirm the validity of the equation in representing the stopping power of protons in the studied materials and its potential use in radiation shielding applications and modeling charged particle-matter interactions.

In this research, the mass attenuation coefficient (μ/ρ) for gamma rays in a quaternary alloy composed which were aluminum (Al), copper (Cu), zinc (Zn), and lead (Pb) was calculated using two different methods. In the first method, the weight fraction rule was applied based on elemental data extracted from the XCOM program. This rule was programmed in MATLAB to obtain theoretical values. In the second method, the XCOM program was used directly from the mixture field to calculate the mass attenuation coefficient for the alloy as a whole. Based on the values calculated using the mixing rule, the linear attenuation coefficient (μl) was calculated, from which the half-value layer (HVL) and mean-free path (MFP) values were obtained. A comparison between the two methods showed good convergence in the values of mass attenuation coefficient, confirming the accuracy of the mixing rule in characterizing the radiation properties of multielement alloys. The results indicate that the studied alloy could be a promising candidate for radiation protection applications, particularly in the fields of medical physics and nuclear engineering.

Objective: To evaluate radioactivity levels in soil samples and their physical impact on the population. Method: The experimental radiation study was conducted by researchers belonging to the Kufa University in Al- Najaf, Iraq, in August 2020, and comprised soil samples from Al-Rahma area. Sodium iodide detector activated with a trace amount of Thallium with crystal dimensions 3" x 3" was used to calculate the concentration of Radium, Thorium and Potassium. Results: Among the 15 samples collected, the average ± standard deviation (SD) concentration for Radium, Thorium and Potassium was 0.1776±0.12, 0.726±0.435 and 1.9128±1.105%, respectively. The reported value of excess lifetime cancer risk was 1.2819×10-3. Conclusion: The area studied was found to be a safe area and did not pose a health threat to the locals. Key Words: Thorium, Radium, Sodium Iodide, Thallium, Radioactivity, Neoplasms, Soil

Background: In this research study for calculation of electronic stopping power of one type of light charge particle, which it is electrons with energy (0.01-100MeV) when they are travel in water and glass. Materials and methods: The electronic stopping power were calculated using ester program and also by do fitting on this results then we get a semi empirical equation and after that a comparison where made with the theoretical results of James E. Turner only for water and we draw. All equation programing and drawing by matlab language. Results: The relationship between them on curve which have good agreement with all results of both track have shown. Conclusion: The stopping power of electrons take greatest values at low energy of electrons and at the high energies, elastic scattering arises gradually. However elastic scattering affects electron passage through resending of the electron paths, it does not contribute in the stopping power.

In this research we studied and calculatedtherelative stopping power(RSP) of protons and alpha particles in water with energy (35-150)MeV by calculating the range of these particles in water and air, where the range of protons in water calculated by usePSTARprogram and ASTARprogram to calculate the range of alpha particles in water for the same range of energy .The range of protons in air calculate by semi empirical equation while by using Bragg and Kleeman ruleincalculation the range of alpha particle in air.

اشرفت على العديد من ندوات و ورش العمل في القسم كمحاضرة و كاحد اعضاء اللجان المؤقته للورش والندوات التي كانت مفيدة للطالبات و القسم

تم التطرق في هذه النشاطات الى عدد من العوامل التي لها علاقة في تحديد مستوى مشاركة المراة في مختلف المجالات، من خلال هذه النشاطات تبين ان هناك مجموعة من المحددات الاجتماعية والاقتصادية ومستوى التعليمي للمراة و التوصل الى ما من شأنه بناء مجتمع واعي بتوجيه المرأة الواعية بحجم دورهاء في بناء المجتمع و معرفة واجباتها و حقوقها .

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