16O+12C Esnek Saçılmasının Optik Model Analizleri için Fenomenolojik Nükleer Potansiyel Şekilleri

16O+12C esnek saçılmasının optik model analizleri, farklı fenomenolojik potansiyel formları kullanılarak ELAB=62, 75, 80, 94.8, 100, 115.9 ve 124 MeV gelme enerjileri için çalışıldı. Optik potansiyelin inşasında, deneysel veriler ile teorik hesaplamalar arasında belirli bir düzeyde uyum sağlanmasına imkân verebilecek karmaşık nükleer potansiyel formları denendi. İlgili nükleer potansiyellerin yapısı; derin, çekici, WS2 (Woods-Saxon kare) formunda gerçel bir kısım ile nispeten sığ, soğurucu sanal kısımlardan oluşturuldu. Bu çalışmada araştırılan sanal potansiyeller; WSH (Woods-Saxon hacim), WS2H, WSH+ WSDY (Woods-Saxon Diferansiyel yüzey) ve WS2H+WSDY olmak üzere 4 farklı formda seçildi. WSH+WSDY tipi ve WS2H+WSDY tipindeki sanal potansiyeller kullanılarak yapılan analizlerin benzer sonuçlar ürettiği ve 16O+12C sistemine ait tesir-kesiti ölçümlerini açıklamada, diğer fenomenolojik potansiyel formlarına göre daha başarılı olduğu bulundu. Teorik analizler ile deneysel veriler arasındaki uyum χ2 hata hesabı ile belirlendi.

Anahtar Kelimeler:

Elastik saçılma, Optik model, Tesir-kesiti

Phenomenological Nuclear Potential Shapes for Optical Model Analyses of 16O+12C Elastic Scattering

Optical model analyses of the 16O+12C elastic scattering at the incident energies ELAB=62, 75, 80, 94.8, 100, 115.9 and 124 MeV were performed by using different phenomenological potential forms. Possible complex nuclear potential forms, which would provide a certain degree of agreement between the experimental data and the theoretical calculations, were examined in the construction of the optical potential. The structure of the considered nuclear potentials consisted of a deep, attractive, WS2 (Woods-Saxon square) type real part and relatively shallow, absorptive imaginary parts. The imaginary potential shapes investigated in this study were chosen in four different forms; WSV (Woods-Saxon volume), WS2V, WSV+ WSDS (Woods-Saxon Differential surface) and WS2V+WSDS. It was found that, the analyses with the potentials having WSV+WSDS type and WS2V+WSDS type imaginary parts produced similar results that explained the differential cross-section measurements of the 16O+12C system better than the other phenomenological potential forms. The agreement between the theoretical analyses and the experimental data was determined by using usual χ2 criterion.

Keywords:

Elastic scattering, Optical model, Cross-section,

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