A parameterization of the electron beam output factors of a 25-MeV linear accelerator
1987; Wiley; Volume: 14; Issue: 4 Linguagem: Inglês
10.1118/1.596145
ISSN2473-4209
Autores Tópico(s)Mass Spectrometry Techniques and Applications
ResumoA new parameterization of the output factors of an electron beam has been developed. The output factors for the electron beams of an AECL Therac-25 have been determined for a variety of square and rectangular fields using ionization measurements and thermoluminescent dosimetry. The data were then least-squares fit by a semiempirical equation which treats the two field dimensions as variables. Such a parameterization allows computer-generated tables of output factors to be manufactured. The calculated values agree with the measured data in most cases to within the +/- 1% experimental uncertainty. A comparison between this method of calculating output factors and two conventional methods is also presented.
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