IONIZATION DEVICE

WIPO Patent Application WO/2008/075606

A1

It is possible to suppress charge object destruction and non-target particle generation and increase charge efficiency. An ionization device includes an ionization chamber (1) and a charging chamber (20). The ionization chamber (1) has a discharge electrode (6) and an opposing electrode (10) in an interior (4) of a case having an ionizing gas introducing opening (14). The opposing electrode (10) has an orifice (8) communicating with outside and formed at a position opposing to the tip end of the discharge electrode (6). The charging chamber (20) is arranged adjacent to the orifice (8) side of the ionization chamber (1). An introduction opening (28) of a charge object introduction portion of the charging chamber (20) has a slit shape and is arranged so as to surround an exit of the orifice (8) at the position near the exit of the orifice (8). The ionization chamber (1) has a higher pressure than the charging chamber (20) and the size of the orifice (8) is set so that the charge object is pulled into the charging chamber (20) from the introduction opening (28) by a negative pressure generated when a gas containing ions is sprayed from the exit of the orifice (8) into the charging chamber (20).

OKUDA DAIJI (JP)
KIMOTO SHIGERU (JP)
OKUDA HIROSHI (JP)

PCT/JP2007/073999

June 26, 2008

December 13, 2007

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SHIMADZU CORP (JP)
OKUDA DAIJI (JP)
KIMOTO SHIGERU (JP)
OKUDA HIROSHI (JP)

G01N27/62; G01N15/02; H01T23/00

JP2006322899A	2006-11-30
JPH11176375A	1999-07-02
JP2003326192A	2003-11-18
US4339782A	1982-07-13

NOGUCHI, Shigeo (Rapport Nanba Bldg. 9F8-1, Motomachi 2-chome, Naniwa-k, Osaka-shi Osaka 16, JP)

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