Methods and apparatus for controlling ion current in an ion transmission device
First Claim
1. A method for controlling the ion current of an ion transmission device, wherein an ion source is in ion communication with and provides ions to the ion transmission device, the method comprising:
- coordinating a value for each of at least one operating parameter of the ion source with a value for each of at least one operating parameter of the ion transmission device.
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Accused Products
Abstract
The invention provides apparatus and methods for controlling ion current in an ion transmission device. An apparatus of the present invention comprises an ion source, an ion transmission device, and a controller. The ion source and the ion transmission device are in ion communication therebetween, and the controller is in signal communication with both the ion source and the ion transmission device. The ion current of the ion transmission device may be controlled by coordinating at least one of the operating parameter values of the ion source with at least one of the operating parameter values of the ion transmission device. Such coordination may result in, for example, improved ion current in the ion transmission device. Also embraced by the present invention are mass spectrometer embodiments that include or use the apparatus or methods of the present invention for controlling ion current.
45 Citations
36 Claims
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1. A method for controlling the ion current of an ion transmission device, wherein an ion source is in ion communication with and provides ions to the ion transmission device, the method comprising:
coordinating a value for each of at least one operating parameter of the ion source with a value for each of at least one operating parameter of the ion transmission device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An apparatus comprising:
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an ion source;
an ion transmission device in ion communication with the ion source; and
a controller configured to coordinate the value of at least one ion source operating parameter with the value of at least one ion transmission device operating parameter. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 30, 31, 32, 33, 34, 35, 36)
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29. The apparatus of clam 28, wherein the mass analyzer comprises a quadrupole mass filter, a reflectron, a time-of-flight mass analyzer, an electric sector time-of-flight mass analyzer, a triple quadrupole apparatus, a Fourier transform ion cyclotron resonance mass analyzer, or a magnetic sector mass analyzer.
Specification