Abstract: A device for measuring radioactive contamination of a body includes a scintillator crystal (1) sensitive to gamma radiation emitted during disintegration of the radioactive elements (I, Cs, Co) contaminating a body to which the end of scintillator (1) is applied. A photodiode (2) converts the photons generated in scintillator (1) by the gamma radiation into electric charges. A mechanism (3, 7) converts these charges into amplified, frequency-filtered voltage pulses. Pulse counts in a plurality of bands and deconvolution effected by an electronic mechanism (8) built into the device allow measurement of the contamination of the body by each of the radioactive elements in question.

Abstract: An orientation detector for radioactive sources is provided.Such detector comprises a homogeneous sphere containing six sensors arranged on three different diameters at a limited depth from the sphere surface. Comparison of the radiation received and differently attenuated by the material of the sphere makes it possible to deduce the angular disposition of the source relative to the detector.

Abstract: Differential olfactometer comprising two atomizers located on either side of a nasal support and respectively associated with a circuit for supplying olfactory stimuli, a retractable antidiffusion device which hides the atomizers during the intervals between nasal stimulation periods and a breathing detection device associated with an electronic control unit for controlling the hiding of the atomizers, wherein the supply circuit for the atomizers comprises means for permanently supplying the latter.