Flux density
From Online Dictionary of Crystallography
Densité de flux (Fr); Densità di flusso (It); 流速密度 (Ja).
Flux density is defined as the flux passing through a unit area. The unit is p.p.s. [math]\times[/math]mm2. Flux density is an appropriate parameter for measuring local counting rates and is synonymous to the term '‘intensity’' as used in colloquial speech.