back scattered electrons

in in situ microanalysis
https://doi.org/10.1351/goldbook.B00583
All @P04829@ which are scattered out of the original direction and retransmitted through the surface of the solid. In practice, electrons emitted from the surface of a solid under electron bombardment which have a @K03402@ in the range between \(50\ \text{eV}\) and @E02251@(\(E_{0}\)).
Source:
PAC, 1983, 55, 2023. (Nomenclature, symbols and units recommended for in situ microanalysis (Provisional)) on page 2026 [Terms] [Paper]