Radiant energy – Ionic separation or analysis
Patent
1989-05-26
1990-11-27
Berman, Jack I.
Radiant energy
Ionic separation or analysis
250282, 250286, 250287, 250288, 250305, 250423R, 250427, H01J 4940
Patent
active
049738402
ABSTRACT:
An electron/ion coincidence technique is employed to characterize the absolute mass dependent transmission efficiency of mass spectrometers. The technique is not dependent upon the partial pressure of the sample beam or the ionization cross sections of calibrant gases.
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Berman Jack I.
Jones Thomas H.
Manning John R.
Nguyen Kiet T.
The United States of America as represented by the Administrator
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