Corona ionisation source

Details Corona ionisation source Corona ionisation source

H - Electricity

01

J

H01J 49/40 (2006.01) G01N 27/64 (2006.01) H01J 49/04 (2006.01)

Patent

CA 2441897

A corona discharge ionisation source is disclosed in which neutral species are removed by directing a flow of oxygen containing gas in a direction substantially different to that of the ion flow. The ion profiles produced are similar in many respects to those produced by a 63Ni source, thus an alternative, non-radioactive, ion source is offered.

L'invention concerne une source d'ionisation par décharge couronne, dans laquelle on retire des espèces neutres en dirigeant un flux gazeux renfermant de l'oxygène dans une direction sensiblement différente de celle du flux ionique. Les profils ioniques produits sont similaires, sous plusieurs rapports, à ceux produits par une source ?63¿Ni. Une source ionique non radioactive alternative est ainsi offerte.

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