Table of Contents – 1. About neutrons

1.1 The neutron as an elementary particle 10

1.2 Neutron interactions 12

1.3 Neutrons as waves 16

1.4 Neutrons as particles 20

1.5 The neutron transport equation 22

1.6 The diffusion equation 24

1.7 Transport theory results 26

1.8 Thermal neutron diffusion theory results 28

1.9 Slowing-down theory: neutrons slowing down in a medium 31

1.10 Time-dependent slowing-down 37

1.11 The Maxwellian thermal-neutron energy distribution 43

1.12 The angular distribution at the surface of a moderator – the

Fermi approximation 46

1.13 Summary 47

Further reading 48