Synchronized Scanning of the First and Second Mass Spectrometers on Tandem Double-Focusing Mass Spectrometers

摘要

A method is described to synchronize the scans of the first and second double-focusing mass spectrometers of a tandem double-focusing mass spectrometer. The scans are synchronized by scanning the first mass spectrometer with voltages instead of the magnetic field. The method is demonstrated with scans that provide all of the precur- sor ions that produce a selected product ion (precursor ion scan).