5. Neutron interaction

Neutron energy loss is mainly due to elastic scattering. It is, in fact, the charged particle that recoils after the shock that is detected in the detector medium.

A neutron of initial kinetic energy E ₀ , scattered at an angle $\overline{\theta }$ in the reference frame of the center of mass, ends up with energy E after an elastic shock with a nucleus (initially at rest) of mass number A. We can write: $\frac{E}{E_0}=\frac{1}{{\left(1+A\right)}^2}(1+A^2+2A$