"Energy Fluence Rate" can be used to describe the energy fluence delivered per unit time.
Applicable units are those of quantitykind:PowerPerArea
http://en.wikipedia.org/wiki/Fluence
"Energy Fluence Rate" can be used to describe the energy fluence delivered per unit time.
$\Psi = \frac{d\Psi}{dt}$, where $d\Psi$ is the increment of the energy fluence during an infinitesimal time interval with duration $dt$.
http://www.iso.org/iso/catalogue_detail?csnumber=31895