Inverted voltage Gerdien Condenser

Details Inverted voltage Gerdien Condenser Inverted voltage Gerdien Condenser

1974-12-24

1976-10-12

Rolinec, R. V.

Electricity: measuring and testing

Determining nonelectric properties by measuring electric...

Erosion

324 71CP, 250282, 250287, 324 33, 73194F, G01N 2762, H01J 3934

Patent

active

039861112

ABSTRACT:
A "Gerdien Condenser" spectrometer for use in a moving air environment for measuring ion densities wherein a constant, electric field is provided in the direction opposite to prior art devices so that the outer cylindrical electrode of the condenser functions as the ion collector. This functional change for the outer electrode permits the use of a small-radius annular opening with a larger width as the entrance for the ions to be measured. This change in the shape of the entrance to the condenser chamber substantially reduces the gas turbulence within the chamber thus increasing the ion density measurement accuracy. The outer electrode may be segmented to further increase the ion measurment accuracy.

REFERENCES:
patent: 2637208 (1953-05-01), Mellen
patent: 2721972 (1955-10-01), Rothstein
patent: 2946887 (1960-07-01), Castle, Jr.
patent: 2950387 (1960-08-01), Brubaker
patent: 3699333 (1972-10-01), Cohen et al.
patent: 3827217 (1974-08-01), Volsy
Beweglichkeitsspektrometrie Atmospharischer Ionen, J. Eichmeier und., W. un, Meteorol, Radsch., 25, J. G. Heft, 1972.

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