beam mass spectrometer

https://doi.org/10.1351/goldbook.12345
Mass spectrometer in which an ion beam accelerated from the ion source is transmitted through a m/z analyzer, or analyzers, to the detector.
Source:
PAC, 2013, 85, 1515. (Definitions of terms relating to mass spectrometry (IUPAC Recommendations 2013)) on page 1525 [Terms] [Paper]