Gamma Kuvvet Fonksiyonlarının Bazı Samaryum İzotoplarının (γ,n) ve (γ,2n) Reaksiyonlarının Tesir Kesiti Hesaplamaları Üzerindeki Etkileri

Teorik modeller ile yapılan çalışmalar, deneysel verilerin mevcut olmadığı veya deneysel çalışmaların gerçekleştirilemediği durumlarda araştırmacıların farklı veriler hakkında öngörü sahibi olmaları sağlar. Bu verilerden biri de, bir reaksiyonun meydana gelme olasılığı olarak tanımlanabilen tesir kesiti değeridir. Ölçülebilen veya hesaplanabilen bir değer olan tesir kesitinin hesaplanmasında, çeşitli modellerin farklı etkilerinin araştırılması bu değerin doğru hesaplanabilmesi açısından son derece önemlidir. Bu bağlamda, bu çalışmada 148,150,152,154Sm izotoplarının (γ,n) ve (γ,2n) reaksiyonlarında tesir kesiti hesaplamalarında farklı gama kuvvet fonksiyonlarının etkilerinin araştırılması amaçlanmıştır. Hesaplamalarda TALYS 1.9 kodu kullanılmış ve elde edilen hesaplama sonuçları literatürde mevcut olan deneysel veriler ile karşılaştırılmıştır. Ayrıca, elde edilen sonuçlar ve deneysel veriler kullanılarak göreli bağıl varyans ve ortalama ağırlıklı sapma analizleri de yapılmıştır. Bu sayede her bir reaksiyon için deneysel veriler ile en uyumlu sonuçların elde edilmesini sağlayan gama kuvvet fonksiyonu tespit edilmiştir.

Anahtar Kelimeler:

Samaryum, Tesir kesiti, Gama kuvvet fonksiyonları, TALYS 1.9

Effects of Gamma Strength Functions on Cross–Section Calculations of Some Samarium Isotopes (γ,n) and (γ,2n) Reactions

Studies with theoretical models allow researchers to have predictions about different data when experimental data are not available or experimental studies cannot be performed. One of these data is the cross–section value, which can be defined as the probability of occurrence of a reaction. In calculating the cross section, which is a value that can be measured or calculated, investigating the different effects of various models is extremely important in order to calculate this value correctly. In this context, in this study, it was aimed to investigate the effects of different gamma strength functions in the cross–section calculations in the (γ,n) and (γ,2n) reactions of 148,150,152,154Sm isotopes. TALYS 1.9 code was used in the calculations and the results obtained were compared with the experimental data available in the literature. In addition, relative variance and mean weighted deviation analyzes were performed using the obtained results and experimental data. By this way, the gamma strength functions, which provide the most compatible results with the experimental data for each reaction, has been determined.

Keywords:

Samarium, Cross–section, Gamma strength functions, TALYS 1.9,

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