At PINSTECH, Ahmad produced the first Photographic plate to identify the fissile matter in natural uranium when it is explored. However, due to its classified research, the knowledge of such detector is completely classified. The NPD developed the Thermoluminescent Dosimeter to measure the detection of alpha particles emitted in the decay of radon and thoron gases. Ahmad collaborating with Hameed Ahmad Khan —director of Radiation Physics Division – in the development of CR-39, a type of particle detector. Ahmad gained expertise in nuclear emulsion and developed a first classified nuclear emulsion that provided information about the mass, charge and velocity of the particles producing the track.