نوع مقاله : مقاله پژوهشی
1 گروه مهندسی پرتو پزشکی، دانشکده کامپیوتر و فناوری اطلاعات، دانشگاه آزاد اسلامی واحد پرند. تهران-ایران
2 گروه پرتو پزشکی، دانشکده کامپیوتر و فناوری اطلاعات، دانشگاه آزاد اسلامی واحد پرند، تهران،ایران
عنوان مقاله [English]
The proportional counter is a type of gaseous ionization detector device used to measure particles of ionizing radiation. The key feature is its ability to measure the energy of incident radiation, by producing a detector output that is proportional to the radiation energy. It is widely used where energy levels of incident radiation must be known, such as in the discrimination between alpha and beta particles, or accurate measurement of X-ray radiation dose. In this study some sample of proportional counters in mode of current gas and sealed gas were designed and constructed.
The advantages and disadvantages of each one were studied. In this study, the plateau curve and functional of these detectors were studied and measured by Radioisotopes sources 133Ba, 241 Am, 152. The results of data shows that the energy discrimination for photon radiation in these detectors are good and it can be concluded that these kind of detectors can be constructed in our country with better results.