Purdue Research Foundation

Jason Duncan

Robert Graham Cooks

Xin Li

Guangtao Li

Xin Yan

Guangming Huang

Ewa Sokol

Joshua Wiley

The invention generally relates to methods and devices for synchronization of ion generation with cycling of a discontinuous atmospheric interface. In certain embodiments, the invention provides a system for analyzing a sample that includes a mass spectrometry probe that generates sample ions, a discontinuous atmospheric interface, and a mass analyzer, in which the system is configured such that ion formation is synchronized with cycling of the discontinuous atmospheric interface.

Synchronization of ion generation with cycling of a discontinuous atmospheric interface

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.

Ion traps that apply an inverse mathieu q scan

Ion traps that apply an inverse Mathieu q scan

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Dayton, IN, United States of America

Jason Duncan