Radiant energy – Ionic separation or analysis – With sample supply means
Reexamination Certificate
2006-02-28
2006-02-28
Wells, Nikita (Department: 2881)
Radiant energy
Ionic separation or analysis
With sample supply means
C250S289000, C250S42300F, C250S42300F
Reexamination Certificate
active
07005634
ABSTRACT:
An ionization apparatus according to the present invention has a mechanism for causing metal ions emitted from an ion emitter to attach to an introduced target gas so as to generate ions of the sample gas and emits the ions of the sample gas to a mass spectrometer. The mass spectrometer has a zone in which one or both of an electric field and magnetic field are formed. As the electrode for causing the generation of cleaning plasma in the ionization zone generating the ions of the sample gas, the ion emitter is used. The ion emitter causes the generation of plasma in connection with a hollow vessel and removes deposits on components facing the ionization zone by the plasma. The plasma cleaning process is performed consecutively at a suitable timing after the ionization process. Due to the above configuration, deteriorated performance in ionization can be restored in a short time, a memory effect can be prevented, and accurate mass spectrometry becomes possible. The ionization apparatus of the present invention is suitable for a mass spectrometry apparatus.
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Fujii Toshihiro
Nakamura Megumi
Sasaki Tohru
Shiokawa Yoshiro
Anelva Corporation
Oliff & Berridg,e PLC
Quash Anthony
Wells Nikita
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