Cylindrical internal inflation proportional counter tube

The invention relates to a cylindrical internal inflation proportional counter tube. The cylindrical internal inflation proportional counter tube comprises a cathode barrel and an anode wire arrangedat the axial position of the cathode barrel. The cathode cylinder is filled with the sample gas to be measured. The two ends of the anode wire are connected with miniature field effect tubes. The cylindrical internal inflation proportional counter tube has the following beneficial effects that a cylindrical single tube body is adopted, and the air flow enters through a single air inlet after the tube body is vacuumized, and the structure is simple; the two ends of the anode wire are connected with the miniature field effect tubes, the distortion of an electric field is reduced, for the countertube with the short length, a uniform electric field with sufficient length can be ensured, and it is guaranteed that the counter tube has good plateau characteristics and stability; and an integralwelding process is adopted