. "http://www.iso.org/iso/catalogue_detail?csnumber=31895"^^ . . "\\(\\theta = \\frac{d\\Phi}{dt}\\), where \\(d\\Phi\\) is the increment of the particle fluence during an infinitesimal time interval with duration \\(dt\\)."^^ . . "Particle Fluence Rate"@en . "\\(\\theta\\)"^^ . "\"Particle Fluence Rate\" can be defined as the total number of particles (typically Gamma Ray Photons ) crossing over a sphere of unit cross section which surrounds a Point Source of Ionising Radiation." . "http://www.encyclo.co.uk/define/Fluence%20Rate"^^ . .