Ionizing radiation detector having proportional microcounters

摘要

PCT No. PCT/FR95/01548 Sec. 371 Date Aug. 19, 1996 Sec. 102(e) Date Aug. 19, 1996 PCT Filed Nov. 23, 1995 PCT Pub. No. WO96/17373 PCT Pub. Date Jun. 6, 1996An ionizing radiation detector having an enclosure filled with a rare gas within which is located a proportional counter. An absorption zone is formed between the counter and the upper wall of the enclosure in which radiation is ionized. The counter has at least one anode and at least one cathode which are parallel to one another and separated by an insulating material layer. The cathode and the insulating material layer have at least one opening in which there is a substantially uniform electric field and which constitutes a multiplication zone for electrons which result from the ionization of the radiation.