Deriving Prompt Neutron Emission from Fission Product Yields

A natural connection exists between the fission product yields and the prompt neutron emission. The average neutron emission for a fission of a particular nucleus $\overline{v}$ is typically known to a very high level of certainty. In addition, the average neutron emission as a function of the fragment mass $\overline{v}$(A) also provides a connection between not only average quantities, such as $\overline{v}$, but also the prompt neutron emission distribution. In this way, one can utilize established prompt neutron data as a constraint on fission product yields.