## Neutron Absorption Cross-section

The likelihood of a neutron absorption is represented by the **absorption cross section** as **σ _{a}**. The relative likelihoods of an absorption reaction or a neutron scattering are represented by dividing the total cross section into scattering and absorption cross sections:

**σ _{t} = σ_{s} + σ_{a}**

Given a collision, **σ _{a} / σ_{t} **is the probability that the neutron will beabsorbed and

**σ**/

_{s}**σ**is the probability that the neutron will be scattered.

_{t}σ

_{a}Source: JANIS (Java-based Nuclear Data Information Software); The JEFF-3.1.1 Nuclear Data Library

Hydrogen. Neutron absorption and scattering. Comparison of cross-sections.Source: JANIS (Java-based Nuclear Data Information Software); The JEFF-3.1.1 Nuclear Data Library

Xenon – 135. Neutron absorption and scattering. Comparison of cross-sections.Source: JANIS (Java-based Nuclear Data Information Software); The JEFF-3.1.1 Nuclear Data Library

Table of cross-sections.