Concept information
PREFERRED TERM
Rutherford backscattering spectrometry
DEFINITION
- Determines the elemental composition of the surface layer of a sample by exposing atoms to a beam of MeV ions. The energy of the elastically scattered ions is measured. Since kinetic energy in elastic scattering is conserved in the centre of mass frame, but not in the lab frame, the energy deposited in the sample is characteristic for the elemental composition of the sample. Here, only particles scattered into the backward direction are measured. The energy is limited so particles interact with the shell of sample atoms or molecules.
BROADER CONCEPT
CONTRIBUTOR
URI
https://vocabulary.actris.nilu.no/actris_vocab/Rutherfordbackscatteringspectrometry
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