ASPIRATING ION CHAMBER Russian patent published in 2007 - IPC G01N27/62 G01N15/00 

FIELD: electronics, possible use in composition of ion counters for simultaneous measurement of concentration of ions, primarily - atmospheric ones, of both signs in one and the same volume.

SUBSTANCE: serially mounted in the body of aspirating ion chamber are four electrodes, assembled from electrically and mechanically interconnected parallel plates or coaxial cylinders of different diameters. Electrodes are divided on two symmetric groups with two electrodes in each group, where one electrode in each group acts as gathering electrode, and second one acts as auxiliary electrode. Mounted in the center of each gathering electrode are high quality isolators with apertures along axis of isolators, through which screws are passed for fastening, with guaranteed gap, of gathering electrodes to auxiliary electrodes. One group of electrodes is inserted into socket in input part of body by means of metallic cut rings or semi-rings, provided with fillets along internal diameter of semi-rings for fastening of auxiliary electrode between them. Second group of electrodes is assembled and inserted analogically to first group, but into socket in output part of body. Both auxiliary electrodes are positioned along edges of chamber body, while gathering electrodes are positioned between them. Length of gathering electrodes at least two times exceeds the value of gap between individual plates or cylinders, of which these electrodes are assembled.

EFFECT: increased precision of measurement of concentration of ions of both signs, minimized dimensions of ion chamber, simplified assembly and adjustment of ion chamber.

7 cl, 4 dwg