Macroscopic cross section from microscopic cross section and number density¶

Macroscopic cross section is equal to the product of the microscopic cross section, i.e. the effective target area where the nucleus interacts with an incident neutron, and the atomic number density (concentration).

Links:

microscopic_cross_section¶: Microscopic cross_section.

Symbol:: sigma
Latex:: \(\sigma\)
Dimension:: area

number_density¶: number_density of particles.

Symbol:: n
Latex:: \(n\)
Dimension:: 1/volume

macroscopic_cross_section¶: macroscopic_cross_section.

Symbol:: Sigma
Latex:: \(\Sigma\)
Dimension:: 1/length

law¶

Sigma = sigma * n

Latex:: \[\Sigma = \sigma n\]