ICP mass spectrometer
View Patent ↗An ICP mass spectrometer comprising an ICP ion source, a mass analyzer having a magnetic sector field, a detector, an extraction element in the form of an ion funnel for transferring the generated ions into the mass analyzer and arranged between the ICP ion source and the mass analyzer, and a transport optics arranged between the ion funnel and the mass analyzer.
1. An ICP mass spectrometer, comprising:
an ICP ion source;
a mass analyzer having a magnetic sector field;
a detector;
an extraction element for transferring the ions generated by said ion source into said mass analyzer, wherein said extraction element is an ion funnel and is arranged between said ICP ion source and said mass analyzer; and
a transport optics arranged between said ion funnel and said mass analyzer.
2. An ICP mass spectrometer according to claim 1 , wherein said transport optics comprises a first electrostatic sector field.
3. An ICP mass spectrometer according to claim 2 , wherein said transport optics comprises a second electrostatic sector field.
4. An ICP mass spectrometer according to claim 3 , wherein at least said first electrostatic sector field comprises a slotted field plate for discharging non-transported particles.
5. An ICP mass spectrometer according to claim 2 , wherein said transport optics comprises a stigmator element.
6. An ICP mass spectrometer according to claim 2 , wherein a lens is arranged upstream of said first electrostatic sector field.
7. An ICP mass spectrometer according to claim 1 , wherein said magnetic sector field comprises a permanent magnet.
8. An ICP mass spectrometer according to claim 1 , wherein said ICP ion source is substantially at earth potential.
9. An ICP mass spectrometer according to claim 8 , wherein elements of said transport optics are surrounded by a Faraday cage.
10. An ICP mass spectrometer according to claim 9 , wherein said magnetic sector field is also surrounded by a Faraday cage.
11. An ICP mass spectrometer according to claim 1 , wherein said detector is a space-resolved detector for simultaneous registration of a plurality of particle masses.
12. An ICP mass spectrometer according to claim 11 , wherein said detector is a CCD detector of at least 5 cm length.
13. An ICP mass spectrometer according to claim 12 , wherein the length of said detector is at least approximately 10 cm.
14. An ICP mass spectrometer according to claim 1 , wherein said magnetic sector field does not comprise a flight tube.
15. An ICP mass spectrometer, comprising:
an ICP ion source;
a mass analyzer having a magnetic sector field;
a detector, wherein said detector is a space-resolved detector for simultaneous registration of a plurality of particle masses; and
an extraction element for transferring the ions generated by said ion source into said mass analyzer, wherein said extraction element is an ion funnel and is arranged between said ICP ion source and said mass analyzer.
16. An ICP mass spectrometer according to claim 15 , wherein said detector is a CCD detector of at least 5 cm length.
17. An ICP mass spectrometer according to claim 16 , wherein said detector has a length of at least approximately 10 cm.