Investigation of the Effects of Level Density Models on Production Cross-Section Calculations of Some Medical Radioisotopes via (α,xn) Reactions

Öz

Radioisotopes used in medical field for diagnostic and therapeutic purposes have many beneficial effects. Especially in early diagnosis of cancer types and in the stages of treatment, the methods that employ the use of radioisotopes are quite common and effective. Therefore; the studies to obtain detailed information about the production routes of these radioisotopes have been supportive of the further effective planning. The calculations made with theoretical nuclear reaction models that are available in cases where experimental studies can’t be performed; aim to eliminate the lack of this area. With this motivation, it is aimed to investigate the effects of different level density models on the production cross-section calculations of 51Cr, 97Ru and 123I radioisotopes available in medical field via some (α,xn) reactions. Obtained results from the calculations are compared visually and statistically with the experimental data available in the literature and it is aimed to determine the most compatible level density models with respect to the examined reaction routes.

Anahtar Kelimeler

• Medical radioisotope,production cross-section,level density models

Bazı Medikal Radyoizotopların (α,xn) Reaksiyonlarıyla Üretim Tesir Kesiti Hesaplamalarında Seviye Yoğunluğu Modellerinin Etkilerinin İncelenmesi

Öz

Medikal alanda teşhis ve tedavi amaçlarıyla kullanılan radyoizotopların pek çok yararlı etkileri bulunmaktadır. Özellikle, kanser türlerinin erken teşhisinde ve ilerleyen evrelerdeki tedavi aşamalarında radyoizotopların kullanıldığı metotlar son derece yaygın ve etkindir. Bu nedenle; bu radyoizotopların üretim rotaları hakkında detaylı bilgi sahibi olunması yönündeki çalışmalar, daha efektif planlamaların yapılabilmesini destekleyici niteliktedir. Deneysel çalışmaların gerçekleştirilemediği durumlarda kullanılabilir olan teorik nükleer reaksiyon modelleri ile yapılan hesaplamalar ise, bu alandaki eksikliği gidermeyi amaçlamaktadır. Bu motivasyon ile bu çalışmada; farklı seviye yoğunluğu modellerinin medikal alanda kullanılabilen 51Cr, 97Ru ve 123I radyoizotoplarının bazı (α,xn) reaksiyonları ile üretim tesir kesiti hesaplamaları üzerine etkilerinin incelenmesi amaçlanmıştır. Elde edilen hesaplama sonuçları, literatürde mevcut olan deneysel veriler ile görsel ve istatistiki olarak karşılaştırılmış ve incelenen reaksiyon rotalarına göre en uyumlu seviye yoğunluğu modellerinin belirlenmesi hedeflenmiştir.

Anahtar Kelimeler

• Medikal radyoizotop,üretim tesir kesiti,seviye yoğunluğu modelleri

Kaynakça

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