نوع مقاله : مقاله پژوهشی کامل
1 دانشگاه جامع امام حسین(ع)
2 دانشکده فیزیک، دانشگاه پیام نور، مرکز تحصیلات تکمیلی تهران، صندوق پستی 3697-19395 ، تهران ، ایران
3 دانشگاه شیراز
عنوان مقاله [English]
Fission fragment angular distribution (FFAD) data are important to get new insights into the fission process. In this study, the frame work of statistical modeling is used to analyze FFAD from neutron induced fission of 234U.The results have been compared with recent experimental data of 234U(n, f) reaction measured at the n_TOF facility in CERN. Accurate analysis was performed in order to deduce the variance K02 of the K- distribution of levels in the transition nucleus at neutron energies from threshold up to 50 MeV. We show the method in which the quantitative values of K02 is obtained. We have also studied the periodic structure of anisotropy related to the set of (n,xn) reaction in comparison with related cross section performed with TALYS1.8 code. The comparison of the variance with the cross section clearly illustrates the strong correlation between the value of the variance and the opening of a fission chance. We show that whenever the probability of reaction in a new channel and cross section increases, K02 decreases; so the minimum of K02 can show the maximum probability of (n,f)xn reaction. The results are in a good agreement with similar calculations in232Th(n,f) and 238U(n,f) reactions.