Choosing a therapy electron accelerator target.

R M Hutcheon; S O Schriber; L W Funk; N K Sherman

doi:10.1118/1.594564

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Choosing a therapy electron accelerator target.

R M Hutcheon·S O Schriber·L W Funk·N K Sherman

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Abstract

Angular distributions of photon depth dose produced by 25-MeV electrons incident on several fully stopping single-element targets (C, Al, Cu, Mo, Ta, Pb) and two composite layered targets (Ni-Al, W-Al) were studied. Depth-dose curves measured using TLD-700 (thermoluminescent dosimeter) chips embedded in lucite phantoms. Several useful therapy electron accelerator design curves were determined, including relative flattener thickness as a function of target atomic number, "effective" bremsstrahlung endpoint energy or beam "hardness" as a function of target atomic number and photon emission angle, and estimates of shielding thickness as a function of angle required to reduce the radiation outside the treatment cone to required levels.

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Electrons Particle Accelerators Radiotherapy Dosage Radiotherapy, High-Energy Journal Article

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R M Hutcheon, S O Schriber, L W Funk, N K Sherman. Choosing a therapy electron accelerator target.. https://doi.org/10.1118/1.594564

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