Statistical analysis of cross sections—A new tool for data validation

A new empirical formula for calculation of (n,3n) cross sections of heavy mass nuclei in the energy region 22-27.5 MeV

In this paper we want to study (n,3n) reactions using an empirical formula derived on the basis of the statistical model considering reaction Q-value dependence. This formula was obtained by taking into account the exponential dependence on asymmetry parameter (N-Z)/A for neutron-induced reactions in Levkovskii's empirical formula. In addition, the present formula depends also on incident energy En, reaction Q-value and symmetry term (N-Z)2/A. Herein, a new analysis of experimental data of (n,3n) reactions in the energy region 22-27.5 MeV was carried out for quick estimation of cross sections of the heavy mass isotopes of odd Z-even N nuclides in the region of A = 151 to 209. We observed a good agreement of the experimental cross section data with the calculations performed using the present empirical formula.

Analysis of cross sections of (n,t) nuclear reaction using different empirical formulae and level density models

This paper aims the calculations of cross section of the ²⁷Al(n,t)²⁵Mg, ⁵⁰Cr(n,t)⁴⁸V, ⁵⁶Fe(n,t)⁵⁴Mn, ⁵⁸Ni(n,t)⁵⁶Co, ⁶⁴Zn(n,t)⁶²Cu, ⁷⁰Ge(n,t)⁶⁸Ga, ⁹²Mo(n,t)⁹⁰Nb, ¹⁰⁶Cd(n,t)¹⁰⁴Ag and ¹¹⁴Cd(n,t)¹¹²Ag nuclear reactions. These cross section calculations were obtained using the different level density models in ALICE/ASH code. Besides, the cross sections of the investigated reactions at incident energies near 14.6 MeV were predicted by using the empirical formulae suggested in our previous paper and in the literature. Therefore, the predicted nuclear data are compared with the other data taken from the literature.