Hierarchy classification:

1. top of the aat hierarchies
2. Activities Facet
3. Processes and Techniques (hierarchy name)
4. [processes and techniques by specific type]
5. analysis and testing techniques
6. mass spectrometry

Anotations

Scope note:

A surface-sensitive mass spectrometry technique in which an ion's mass-to-charge ratio is determined by a time measurement. Particles removed from the atomic monolayers of a surface are accelerated into a flight tube and their mass is measured by the time it takes them to reach the detector.