Ion traps that apply an inverse mathieu q scan
AssigneePurdue Research Foundation
InventorsRobert Graham Cooks, Jason Duncan, Joshua Wiley
Life of this patent
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Abstract
The invention generally relates to ion traps and methods of use thereof. In certain embodiments, the invention provides a system that includes a mass spectrometer including an ion trap, and a central processing unit (CPU). The CPU has storage that is coupled to the CPU for storing instructions that when executed by the CPU cause the system to apply a constant radio frequency (RF) signal to the ion trap, and apply a first alternating current (AC) signal to the ion trap the frequency of which varies as a function of time.
Claims16
A system, the system comprising:
- a mass spectrometer comprising an ion trap;
- and
- a central processing unit (CPU), and storage coupled to the CPU for storing instructions that when executed by the CPU cause the system to:
- apply a constant radio frequency (RF) signal to the ion trap;
- and
- apply an alternating current (AC) signal to the ion trap in a manner wherein frequency and amplitude of the AC signal are varied such that application of the AC signal gives rise to an approximately constant well depth.
A method for operating an ion trap of a mass spectrometer, the method comprising:
- applying a constant radio frequency (RF) signal to an ion trap of a mass spectrometer;
- and
- applying an alternating current (AC) signal to the ion trap in a manner wherein frequency and amplitude of the AC signal are varied such that application of the AC signal gives rise to an approximately constant well depth.
Dependencies are inferred from the claim text.