The 239Pu fission chambers are widely used to measure fission spectrum neutron flux due to a flat response to fast neutrons. However,in the meantime the resonan
In this paper,we calculate the off-shell superpotential of two Calabi-Yau manifolds with three parameters by integrating the period of the subsystem.We also obt
Reactor neutrino experiments build large-scale detector systems to detect neutrinos. In liquid scintillator,a neutral bound state of a positron and an electron,