fluence2

 
Pronunciation: /ˈfluːəns/

noun

Physics
  • a stream of particles crossing a unit area, usually expressed as the number of particles per second: the model computes the expected proton fluences from solar events [mass noun]: an ion beam of low fluence

Origin:

early 17th century (in the sense 'a flowing, a stream'): from French, from Latin fluentia, from fluere 'to flow'