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Measurement of primary bremsstrahlung spectrum from an 8‐MeV linear accelerator
Author(s) -
Levy Louis B.,
Waggener Robert G.,
Wright Ann E.
Publication year - 1976
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 - 10.1118/1.594221
Subject(s) - bremsstrahlung , physics , linear particle accelerator , photon , spectrometer , fluence , photon energy , nuclear physics , neutron , cutoff , atomic physics , beam (structure) , energy (signal processing) , dosimetry , irradiation , nuclear medicine , optics , medicine , quantum mechanics
The bremsstrahlung spectrum from an 8‐MeV linear accelerator has been measured using a NaI(T1) spectrometer system. The spectrum shows a low‐energy cutoff at 0.4 MeV and the maximum photon energy to be approximately 6% greater than the nominal energy. The maximum emission of energy fluence was 1.6 and 1.8 MeV for measured and calculated values, respectively. The fast neutron dose in the photon beam was approximately 0.09% of the x‐ray dose. The weighted mean energy was 2.3 MeV, measured value, and 2.4 MeV, calculated value.