Multiple Scattering of Neutrons and Correlation Functions

Abstract
The Van Hove formula for neutron scattering is generalized to include multiple scattering. The differential cross section is written in terms of the many-particle space-time correlation functions for the target system. As a simple example, a heavy gas system is treated, and the behaviour of the multiple elastic scattering is discussed for the cases of the low- and high-energy limits of the incident neutron energy.