Introduction - If you have any usage issues, please Google them yourself
Monte Carlo simulation of time-resolved photon fluence rate
* in response to an impulse of energy at time zero delivered as an
* isotropic point source. Photon propagation is 3D in spherical
* coordinates. The instantaneous relative fluence rate,
* F(r,t)/Uo [cm^-2 s^-1] where F(r,t) = [J cm^-2 s^-1] and Uo = [J].
* For the calculation, the value of Uo is assumed to be unity [1 J].
* Propagation is in an infinite homogeneous medium
* with no boundaries. This program is a minimal Monte Carlo
* program.