Apparatus for producing ions of thermally labile or nonvolatile

Details Apparatus for producing ions of thermally labile or nonvolatile Apparatus for producing ions of thermally labile or nonvolatile

1978-06-16

1979-11-20

Dixon, Harold A.

Radiant energy

Ion generation

Electron bombardment type

250281, 250423R, H01J 2700

Patent

active

041752341

ABSTRACT:
An apparatus for ionizing and vaporizing non-volatile or thermally labile molecules of a sample for introduction into a mass spectrometer analyzer which comprises a housing containing an ionization chamber; an ion exit port for the introduction of gaseous ions from said ionization chamber into a mass spectrometer analyzer on the portion of the housing attached to said mass spectrometer analyzer; inlet means for introducing a gaseous reactant into said ionization chamber within said housing; inlet means for admitting high energy radiation into said ionization chamber within said housing to at least partially ionize the molecules of said gaseous reactant; aperture means open into said ionization chamber of said housing for admitting a conductive emitter characterized by having a conductive element of a highly irregular surface upon which is deposited said sample for analysis into said mass spectrometer analyzer; and a vacuum exit aperture in said housing by which the pressure within said ionization chamber can be reduced.

REFERENCES:
patent: 3566185 (1971-02-01), Gavin
patent: 3746905 (1973-07-01), Shelton et al.
patent: 3758777 (1973-09-01), Brunnee
patent: 3809899 (1974-05-01), Baker et al.
patent: 3852595 (1974-12-01), Aberth
patent: 3895231 (1975-07-01), Sodal et al.
patent: 3924134 (1975-12-01), Uman et al.
patent: 4023398 (1977-05-01), French et al.

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