(,) ve (,) Reaksiyonları için İstatistiksel Model Bileşenlerinin Optimum Değerlerinin İncelenmesi

Yıl 2024, Cilt: 14 Sayı: 1, 131 - 142, 15.03.2024

Halim Büyükuslu

https://doi.org/10.31466/kfbd.1365386

Öz

Tesir kesit hesaplamalarında yer alan çeşitli modellerin/fonksiyonların farklı reaksiyon türlerine, enerji aralıklarına ve kütlelere göre test edilmesi, nükleer modellerin daha fazla geliştirilmesi için önemlidir. Bu çalışmada, nükleer seviye yoğunluğu, -çekirdek optik modeli ve γ-ray strength fonksiyonu gibi nükleer bileşenlerin tesir kesitine bağımlılığı istatistiksel model penceresinde sistematik hesaplamalar yapılarak gösterildi. Astrofizik reaksiyonlar arasında önemli bir yere sahip olan (,) ve (,) reaksiyonları için, çeşitli hedef çekirdeklerde, reaksiyon tesir kesiti hesaplamaları yapıldı. Teorik model hesaplamaları deneysel verilerle karşılaştırıldı. Deneysel ve hesaplanmış tesir kesitlerin her seti için ortalama sapma faktörü değerleri belirlendi. Tüm alfa ve gama ışını gelme enerjileri ve tüm hedef çekirdekler için en uygun modeller/fonksiyonlar belirlendi.

Anahtar Kelimeler

( ) ve ( ) reaksiyonları, alfa optik modeli, seviye yoğunluğu, strength fonksiyonları, Talys 1.96

Studying optimum values of statistical model ingredients for (,) and (,) reactions

Öz

In order to further develop nuclear models/functions, it is important to test various models and functions included in cross-section calculations based on different reaction types, energy ranges, and masses. In this study, the dependence of nuclear ingredients such as level density, -nucleus optical model and γ-ray strength function on the cross-section were illustrated by making systematic calculations in the statistical model window. Reaction cross-section calculations were systematically performed for (α,γ) and (γ,α) reactions, which hold significant importance in astrophysics, on various target nuclei. Theoretical model calculations were compared with experimental data. For each set of experimental and calculated cross sections, the average deviation factor values were determined. The best-fit models and functions for all incoming alpha and gamma energies and for all target nuclei were identified.

Anahtar Kelimeler

( ) and ( ) reactions, alpha optical models, level densities, strength functions, Talys 1.96

Kaynakça

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