By Nikolay Kornilov
Although the fission of heavy nuclei used to be stumbled on over seventy five years in the past, many difficulties and questions nonetheless stay to be addressed and spoke back. The reader might be awarded with an outdated, yet continual challenge of this box: The contradiction among suggested Fission Neutron (PFN) spectra measured with differential (microscopic) experiments and fundamental (macroscopic and benchmark) experiments (the Micro-Macro problem). the adaptation in common strength is very small ~3% however it is solid and we won't clarify the adaptation because of experimental uncertainties. do we degree the PFN spectrum with excessive accuracy? How may possibly we evaluate result of assorted experiments to supply larger accuracy? Are our conventional theoretical versions right? What will be performed to unravel the Micro-Macro challenge in destiny? those questions are mentioned during this monograph for the reader. the present paintings might be of curiosity to graduate scholars and researchers, quite these operating in nuclear and neutron physics.