back scatter coefficient

in in situ microanalysis
https://doi.org/10.1351/goldbook.B00582
Number of @B00583@ generated per @P04829@ for a given specimen and experimental condition. It depends on (mean) @A00499@ of the excited area of the sample, @A00346@ between electron beam and sample surface, primary electron energy and thickness of the sample.
Source:
PAC, 1983, 55, 2023. (Nomenclature, symbols and units recommended for in situ microanalysis (Provisional)) on page 2026 [Terms] [Paper]