نویسندگان
1 دانشگاه تحصیلات تکمیلی صنعنی و فناوری پیشرفته کرمان
2 سازمان انرژی اتمی ایران
3 دانشگاه آزاد اسلامی
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
According to International Atomic Energy Agency (IAEA) recommendations, the calibration of ionization chambers used for radiotherapy dosimetry follows the substitution method which demands the use of a reference ionization chamber. This work introduces the Design and fabrication of cylindrical ionization chamber for dosimetry to be used by standard dosimetry laboratories. The result of the quality control tests in Secondary Standard Dosimetry Laboratory (SSDL) of the Atomic Energy Organization Which was carried out in accordance with the standards and limits set by the International Atomic Energy Agency, are evidence of the accuracy of the claim that this chamber can be used as a reference dosimeter in standard dosimetric laboratories.The low polarity effect and leakage current, high ion collection efficiency and stability, linear response of the detector to the dose and the rate of dosing are some of this instrument characteristic through optimum design of guard ring and collecting electrode and also the proper choice of materials in fabrication.
کلیدواژهها [English]