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Energy calibration of a linear accelerator with photonuclear reactions
Author(s) -
St. George F.,
Anderson D. W.
Publication year - 1982
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 - 10.1118/1.595062
Subject(s) - kinetic energy , linear particle accelerator , nuclear physics , range (aeronautics) , energy (signal processing) , calibration , physics , electron , yield (engineering) , nuclear reaction , atomic physics , materials science , optics , beam (structure) , quantum mechanics , composite material , thermodynamics
Photonuclear reactions have been used to calibrate the energy of a Sagittaire clinical electron accelerator between 10 and 30 MeV. Thresholds at 10.8 MeV for the 63 Cu(γ, n ) 62 Cu reaction and 29.7 MeV for the 32 S(γ,3 p ) 29 Al reaction provided two energy points. The break in the 16 O(γ, n ) 15 O activation yield curve at 17.3 MeV was determined as an intermediate point. The relationship between electron kinetic energy and current through the energy‐analyzing magnet was found to be linear within 1.0% in this energy range.