Radiant energy – Ionic separation or analysis
Patent
1977-03-31
1979-04-24
Smith, Alfred E.
Radiant energy
Ionic separation or analysis
250282, 250292, H01J 3934, B01D 5944
Patent
active
041514149
ABSTRACT:
The measurement of a dc current from ions produced in a surface ionization detector for particulates in combination with simultaneous particulate counting to differentiate between particulates above or below a predetermined size and total particulates present thus determining whether a given aerosol consists primarily of large particulates or very small particulates and providing general information about the particle size in an aerosol. The dc current measurement further provides surface ionization detection of particulates at densities which overload circuitry for pulse counting, whereby the dynamic range of the instrument is extended.
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patent: 3258713 (1966-06-01), George
patent: 3641340 (1972-02-01), Grinten et al.
patent: 3808433 (1974-04-01), Fite et al.
patent: 3835319 (1974-09-01), Roehrig et al.
patent: 3973121 (1976-08-01), Fite et al.
Fite Wade L.
Myers Richard L.
Albright Penrose Lucas
Anderson B. C.
Extranuclear Laboratories Inc.
Mason William B.
Smith Alfred E.
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