Title:
質量分析装置のためのイオン源
Document Type and Number:
Japanese Patent JP4454157
Kind Code:
B2
Abstract:
An ion source for a mass spectrometer includes an atmospheric pressure sample ioniser (20), arranged to generate ionised sample droplets for ingress into an ion block (50). The block (50) has an entrance orifice cone (70) in communication with an inlet channel (60), and an outlet channel (80) which has a first end that intersects the inlet channel (60) at 90° therto. The other end of the outlet channel (80) opens into an evacuation chamber (90) which is pumped via a rotary vacuum pump (110). The reduced pressure within the channels of the ion block (50) draws sample droplets therethrough. An exit orifice defined by an exit orifice cone (130) is formed in the outlet channel (80) and sample ions pass through into a mass analyzer region (180). The right-angle bend between the inlet and outlet channels introduces turbulence and promotes desolvation. Streaming of droplets from the entrance cone (70) to the exit cone (130) is also prevented.
Inventors:
Gills roger
Application Number:
JP2000599059A
Publication Date:
April 21, 2010
Filing Date:
February 02, 2000
Export Citation:
Assignee:
Thermo Finnigan Limited Liability Company
International Classes:
G01N27/62; H01J49/10; G01N30/72; H01J49/04
Domestic Patent References:
| JP9190795A | ||||
| JP7159377A | ||||
| JP9068517A | ||||
| JP11118764A | ||||
| JP2295054A | ||||
| JP60140356U |
Foreign References:
| WO1998049710A1 |
Attorney, Agent or Firm:
Kenji Yoshida
Jun Ishida
Jun Ishida