UYARILMIŞ 124Sn ve 124La ATOMİK ÇEKİRDEKLERİNİN PARÇALANMA ÜRÜNLERİNDEKİ FARKLILIKLARIN İNCELENMESİ

Year 2015, Issue: 40, 42 - 49, 01.06.2015

Tuğba Aybar Rıza Oğul

Abstract

Sıcak çekirdeğin parçalanması sonucu açığa çıkan ürünler yardımıyla çekirdeğin iç yapısıyla ilgili birçok bilgi elde edilebilmektedir. Çeşitli reaksiyonlar için uyarılma enerjisinin parçalanma ürünlerine etkileri için istatistiksel çok katlı parçalanma modelini (SMM) kullanarak sonuçlar elde ettik. Bu amaçla istatistiksel çok katlı parçalanma modeli (SMM) temelinde 124Sn ve 124La çekirdeklerinin yük ve kütle dağılımlarını analiz ettik. Bunlara ek olarak farklı uyarılma enerjilerinde T sıcaklıklarını belirleyip, bu sıcaklık değerlerinin uyarılma enerjileriyle değişimlerinin sıvı-gaz faz geçişiyle ilişkisi gösterilmiştir. Farklı ortalama nötron-proton oranlarına sahip atomik çekirdekler için, simetri enerji katsayısının parçacık yük dağılımına ve kütle dağılımına etkisi Ex (uyarma enerjisi) değerleri için araştırıldı. Simetri enerji parametresi 25 MeV, 14MeV ve 8 MeV değerleri için hesaplamalar yapıldı. Parçacıkların simetri enerjisinin yük dağılımını ve kütle dağılımını temel olarak etkilemediği gözlendi.

Keywords

İstatistik Çok Katlı Parçalanma Modeli, Kütle Dağılımı, Yük Dağılımı, Kalorik Eğri, Simetri Enerjisi

INVESTIGATION OF THE DIFFERENCES IN FRAGMENTATION PRODUCTS OF EXCITED 124Sn AND 124La ATOMIC NUCLEI

Abstract

With the help of the properties of fragments which are derived from the disintegration of hot nuclei, it is likely to bring information about inside of the nuclei. We have obtained some results with different excitation energies which effects the fragmentation yields for different reactions, using the Statistical Multifragmentation Model (SMM). For this purpose we have analyzed the charge and mass distributions of 124Sn and 124La on the basis of the Statistical Multifragmentation Model (SMM). In addition to these calculations, we have determined the values of temperature T and their relations to the liquid-gas phase transition at different excitation energies. Influence of the symmetry energy parameter gamma on charge distributions and mass distributions of produced fragments in different ranges the excitation energy Ex is investigated for the nuclei with different neutron-proton ratios. The symmetry energy parameters used in the calculations were 25 MeV, 14 MeV and 8 MeV. We observed that the symmetry energy of individual fragments does not essentially influence the charge distributions and mass distributions

Keywords

Statistical Multifragmentation Model (SMM), mass distributions, charge distributions, caloric curve, symmetry energy

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