Device for locating nuclear radiation and radiation image formation device incorporating such a locating device

Claim 1

Device for locating a nuclear radiation incorporating a detection head for detecting a nuclear radiation and a position coder for locating said nuclear radiation, said detection head comprising a collimator, a planar layer of a material sensitive to said nuclear radiation for receiving on a first or front face a nuclear radiation transversing said collimator and for supplying on a second or rear face a light radiation which is a function of the nuclear radiation received, a plurality of transducers arranged on the rear face of said layer, each supplying an electric signal which is a function of the light radiation received, each nuclear radiation producing a light radiation seen by a plurality of transducers said locating device being characterized in that the position coder comprises weighting means for supplying analog electrical signals X + , X - , Y + , Y - , each representing weighted sums of the electric signals supplied by the transducers, the signlas X + , X - being a function of the position and the energy of the nuclear radiation received in accordance with an axis X and the signals Y + , Y - being a function of the position of the nuclear radiation received in accordance with an axis Y, a digitizing means for receiving the analog signals X + , X - , Y + , Y - and for supplying corresponding digital signals X N + , X N - , Y N + and Y N - and a calculating means or computer for determining the signals of digital coordinates X N , Y N of the nuclear radiation received as a function of the digital signals X N + , X N - , Y N + and Y N - .