dm/dt The mass transfer rate, - which I call dm/dt-- so that is the transfer rate from the donor - onto the neutron star-- that transfer rate is roughly ten to the 14th kilograms per second.

This paper expound the neutron dynamic math model of a nuclear reactor and applied this model to set up the transfer function.

For the study of Accelerator Driven sub critical System (ADS), the heat transfer of spallation neutron target is an important issue.