Isomeric ratio and cross section of the237Np(n, 2n) reaction

Conclusion It has thus been shown that on the basis of the Hauser-Feshbach theory, and taking into account the law of the conservation of moment, the isomer ratio for the reaction²³⁷Np (n, 2n) can be calculated. The indeterminateness of the modeling of the²³⁶Np level scheme, to all appearances, has little effect on the energy dependence of the isomeric ratio.The error in the calculated cross section for the (n, 2n) reaction is determined chiefly by the error in the experimental data on the isomeric ratio and on the cross section for the formation of the short-lived state. Obtaining a correct estimate of the error is made difficult by the scarcity of experimental data on the isomeric ratio.The results of this work can be useful in practical activity when combined with an estimate of the cross sections and the creation of a complete system of neutron cross sections for²³⁷Np. Theoretical estimates of the cross sections can to a significant extent compensate for the scarcity and indeterminateness of the experimental data.Translated from Atomnaya Énergiya, Vol. 63, No. 2, pp. 110–113, August, 1987.     

Formation cross sections of nuclei with (n,2n) reactions

Ｆｏｒｍａｔｉｏｎｃｒｏｓｓｅｃｔｉｏｎｓｏｆｎｕｃｌｅｉｗｉｔｈ（ｎ，２ｎ）ｒｅａｃｔｉｏｎｓＣｈｅｎＸｕｅＳｈｉ，ＸｉｅＫｕａｎＺｈｏｎｇ，ＺｈｏｕＳｈｅｎｇＭｏ，ＹａｎＱｉｎｇＱｕａｎ（ＳｈａｎｇｈａｉＩｎｓｔｉｔｕｔｅｏｆＮｕｃｌｅ...     

Cross section of the reaction (n,d) + (n,np) + (n,pn) at even cadmium and tin isotopes for 14-MeV neutrons

Khar'kov State University. Translated from Atomnaya Énergiya, Vol. 75, No. 3, pp. 233-235, September, 1993.