https://doi.org/10.1351/goldbook.08722
Characteristic area related to the probability of a specified interaction or reaction between an incident nuclear radiation and a target particle or system of particles.
Notes:
- Cross section is the reaction rate per target particle for a specified process divided by the flux density of the incident radiation.
- In general, the type of nuclear radiation (e.g. neutron, photon), the energy of the incident radiation (e.g. thermal, epithermal, fast (see: neutron energy)) and the type of interaction of reaction (e.g. activation, fission, scattering) are specified.
Example:
The capture cross section of
The capture cross section of