Mass spectrometer

Radiant energy – Ion generation – Field ionization type

Reexamination Certificate

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Details

C250S42300F, C313S230000

Reexamination Certificate

active

06921906

ABSTRACT:
A rotating field mass spectrometer includes an ionizing structure having a pair of conductive electrodes located closer to one another than the mean free path of the gas being ionized, and a rotating field mass spectrometer part for analyzing ions produced by the ionizing structure. The membrane may include a supporting portion, and a relatively thin non-supporting portion where the ions are formed.

REFERENCES:
patent: 4926056 (1990-05-01), Spindt

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