Systematics of the mean energy and the mean multiplicity of prompt neutrons originating from 232Th fission

The cross section for the neutron-induced fission of 232Th target nuclei, σf (En), was described within statistical theory. The spectra of the mean multiplicity, \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\bar v$$\end{document}(En), and the mean energy, \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\bar E$$\end{document}(En), of secondary neutrons accompanying 232Th fission induced by neutrons of energy extending up to En = 20 MeV were analyzed on the basis of the chance structure of the cross section.