Spark source spectrographic analysis process and apparatus
AssigneeCommissariat a l'Energie Atomique
InventorJacques Berthod
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Abstract
The spark source spectrographic analysis process and apparatus utilizes an ion source with two electrodes connected to electrical excitation means making it possible to produce discharges between them and means for directing the ions formed in this source to a mass spectrograph, together with means which make it possible for the spectrograph only to analyze the ions produced by discharges having a given direction.
Claims8
A spark source mass spectrographic analysis process of the type in which ions are produced by means of sparking discharges between two electrodes, the ions produced being directed towards a mass spectrograph where spectrography is performed, wherein the direction of each discharge is detected, the ions are directed towards the mass spectrograph where they are analysed when the discharge has a desired direction but are deflected away and are not analysed when the discharge does not have said desired direction.
A spark source mass spectrographic analysis which comprises an ion source having two electrodes connected to electrical excitation means permitting discharges to be produced between them, means for directing the ions formed in said source to a mass spectrograph, and means permitting the spectrograph to analyse only the ions produced by the discharges having a given direction comprising discrimination means which comprise discharge direction detection means able to supply a voltage which is applied to an ion beam deflecting electrode, whereby said voltage is such that the electrode deflects the ions resulting from discharges which do not have the desired direction.
Dependencies are inferred from the claim text.