10.5.1} Resonances and self-shielding with pointwise cross sections

 Resolved resonances are obviously fully described in the pointwise
 cross sections, properly broadened at the given temperature.
 In the resolved resonance energy range self-shielding is automatically
 accounted for.

 For materials with no unresolved resonance regions, no further consideration
 is required.

 When unresolved resonance regions (URR's) are present, even pointwise
 cross sections have a problem with self-shielding. In order to solve
 this issue, offline generated statistical distributions of cross sections
 are sampled from at run-time. This procedure is implemented in the FLUKA
 pointwise approach, and therefore partial or full self-shielding is
 automatically assured in all conditions and energy ranges.

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