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J Radiat Prot > Volume 9(1); 1984 > Article
Journal of Radiation Protection 1984;9(1):19-0.
반도체 검출기에 의한 전자선 선량분포에 관한 연구
A Study on Dose Distribution of Electron Beams by Semiconductor Detector
Kang, Wee-Saing;Ha, Sung-Whan;Park, Charn-Il;
There is not yet an universal method of electron dosimetry. The Authors measured dose distributions of the electron beams from Clinac-18 by means of silicon detector connected to X-Y recorder, and compared them in water phantom with dose distributions measured by film and ion chamber, both inserted in polystyrene phantom. The results are as followings, 1. Dose in build-up region increased with the field size for all energy, and depth dose profiles of $6{sim}12MeV$ beam under the depth of maximum dose were independent of field size, but those of 15 and 18 MeV beam were dependent on the field size. 2. The widths of penumbra by semiconductor detector were narrower than those by film for same energy beam. 3. Depth dose profiles by three different dosimeter did not coincide each other. In the build-up region, dose by semiconductor detector was lower than that by any other dosimeter.
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