Quantum
Cross Section
Effective area quantifying interaction probability.
SI unit
square metre (m²)
Dimension:
Other units
- square metre (m²)
- barn (b)×1.00e-28
Order of magnitude
How values of cross section span the physical world (in m², log scale).
Neutrino scattering
10-47 m²
Nuclear reaction
10-28 m²
Lower limit10-48 m²Upper limit10-24 m²