Assertion: nuclear cross section | /r/HasProperty | governed by the reaction rate equation
Facets:
value: for a particular set of particles
type: OTHER
Source sentences:
text: Nuclear cross sections are used in determining the nuclear reaction rate, and are governed by the reaction rate equation for a particular set of particles (usually viewed as a "beam and target" thought experiment where one particle or nucleus is the "target" [typically at rest] and the other is treated as a "beam" [projectile with a given energy]).