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Backscattering and transmission through a high Z interface as a measure of electron beam energy
Author(s) -
Das Indra J.,
Bushe Harry S.
Publication year - 1994
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.597375
Subject(s) - scattering , electron , cathode ray , beam (structure) , optics , atomic physics , electron scattering , energy (signal processing) , measure (data warehouse) , foil method , transmission (telecommunications) , physics , materials science , nuclear physics , quantum mechanics , database , computer science , composite material , electrical engineering , engineering
The ratio of electron beam transmission (Tr) and backscattering (Bs) is used as a measure of beam energy. With a proper thickness of high Z medium placed at the surface of a low Z homogeneous medium, it is observed that the function log(Tr/Bs) is a linear function of electron energy. This method is applied to electrons produced with scattering foil and pulse‐swept (scanned) beams for the nominal energies ranging from 6 to 20 MeV. This technique provides a unique alternative method which is easy, simple, and accurate within ±3% for estimation of electron beam energy.