Radiant energy – Ion generation – Field ionization type
Reexamination Certificate
2005-07-26
2005-07-26
Wells, Nikita (Department: 2881)
Radiant energy
Ion generation
Field ionization type
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
Hartley Frank T.
Smith Steven J.
California Institute of Technology
Christie Parker & Hale LLP
Gurzo Paul M.
Wells Nikita
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