Radiant energy – Ion generation – Field ionization type
Patent
1980-04-03
1982-01-19
Anderson, Bruce C.
Radiant energy
Ion generation
Field ionization type
H01J 2700
Patent
active
043119107
ABSTRACT:
The requisite process chambers for field desorption ionization are annularly arranged and cooperate with electrodes on the inside. Individual electrodes are cyclically and in steps juxtaposed to the process chambers so that the various steps are simultaneously carried out on different electrodes. After a cycle, all electrodes have faced all of the chambers. Alternatively, a single wire is segmentwise placed adjacent to the chambers. The process steps are, in each instance: activating the electrode (or a wire segment); depositing an analyzing substance; ionization; and cleaning.
REFERENCES:
patent: 3308292 (1967-03-01), Ardenne
patent: 3720829 (1973-03-01), Palmberg
patent: 4178507 (1979-12-01), Brunnee et al.
"Purification, Wet Processes Determination of Structure", Korte, Methodicum Chimicum, vol. 1, Part A, 1974, pp. 493-504.
"High-rate Growth of Dendrites on Thin Wire Anodes for Field Desorption Mass Spectrometry", Linden et al., J. Physics E: Sci Instaim.; vol. 11, 1978, pp. 1033-1036.
On the Mechanism of Cathodic Growth on Tungsten Needles by Decomposition of Hexacarbonyltungsten under High Field Conditions", Linden et al., App. Physics, 22, 1780, pp. 83-87.
"New Sample Supply Tech. for Field Desorption Mass Spectrometry", Linden et al., J. of Physics E: Sci. Inst., vol. 10, 1977, pp. 657-660.
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