Thomson-csf

Philippe Gamot

Pierre Felix

Guy Moiroud

Serge Veron

In camera using resistive targets wherein a recording tube of which the target (100) made of a pyroelectric material in the example and read by a beam of electrons, permanently receives a flow of ions formed in the tube by the collision between the electrons of the beam and the atoms of a gaseous mass of which the pressure in the tube is determined by the temperature of a reservoir, the invention provides means for controlling the temperature of the reservoir (filament 03) in dependence upon the average target current which is proportional to the flow of ions in question.

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Paris, France

Philippe Gamot