beam chopper

https://doi.org/10.1351/goldbook.09365
Electrostatic or electromagnetic device used to generate pulses of ions from a continuous ion beam.
Note: The beam chopper can be used to define the pulse length and hence the mass resolution in a time-of-flight mass spectrometer and it can also be used to select particular ions in a beam that contains more than one species.
See also: beam bunching
Source:
PAC, 2020, 92, 1781. (Glossary of methods and terms used in surface chemical analysis (IUPAC Recommendations 2020)) on page 1832 [Terms] [Paper]
Citation: 'beam chopper' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.09365 RIS BibTex EndNote
Div. VTextXMLJSON