Characteristics of Spherical Ionization Chamber
نویسندگان
چکیده
منابع مشابه
Fabrication of Free Air Well Type Ionization Chamber and Calculational Assessment and Measurement of Its Operational Characteristics
Introduction: Well type ionization chamber is a measuring device which is used to determine the activity of brachytherapy sources. The chamber has a cylindrical volume in which a cylindrical tube is mounted in the middle of the chamber. For the measurements, the brachytherapy sources are transferred to the middle of the tube. Materials and Methods: For designing the well type chamber, the measu...
متن کاملThe calibration of the 'Fingerhut' ionization chamber
The use of the "thimble" ionization chamber (Fingerhutkammer) has in the past been the only method for comparing the primary X-ray standards of different laboratories, hence the precise calibration of two thimble chambers is discussed in this paper. Five principal factors determine the accuracy of such a calibration, and it is shown that the errors are all, in general, in the same direction. It...
متن کاملEvaluation of dosimetry a performance parameter for a homemade farmer-type ionization chamber according to IEC60731
Introduction: Due to its simplicity, fast response and high reliability, ion chamber detectors are one of the most suitable dosimetry instruments for X and gamma rays. The dosimeter of photon beams, which used in radiotherapy centers, requires high accuracy and should pass requirements of IEC 60731 standards. About 80 percent of the IEC 60731 standard tests such as stabil...
متن کاملDesign and fabrication of cylindrical ionization chamber for application in radiation protection
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 qual...
متن کاملResponse characteristics of a tandem ionization chamber in standard X-ray beams.
A tandem ionization chamber was developed for quality control programs of the kilovoltage X-ray equipment used in radiotherapy. This chamber was tested and calibrated in low-energy X-ray beams in accordance with international recommendations, and it showed a satisfactory level of performance, mainly with regard to its main use, namely formation of a tandem system for confirmation of half-value ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Transactions of the Society of Instrument and Control Engineers
سال: 1972
ISSN: 0453-4654
DOI: 10.9746/sicetr1965.8.104