L11_A
3-4 Neutron Flax
Intensity
Cross section maxima (resonance)
Elastic Scattering
    Three regions(in energy):
        Low energy
        Resonance Region
        High energy
In-Elastic Scattering

L11_B
Radiative Capture
    Three regions(in energy):
        Low energy
        Resonance Region
            Breit-Wigner one-level formula
        High energy
Charged Particle Reaction
Slowing Down of neutron
    moderation
    moderator