title: Backscattering and transmission through a high Z interface as a measure of electron beam energy.
abstract: 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.
authors.affiliation: Fox Chase Cancer Center, Department of Radiation Oncology, Philadelphia, Pennsylvania 19111.
authors.forename: I J
authors.initials: IJ
authors.lastname: Das
authors.forename: H S
authors.initials: HS
authors.lastname: Bushe
mesh_terms: D004583:Electrons; D010315:Particle Accelerators; D012542:Scattering, Radiation