Title :
Development of an extrapolation chamber for the calibration of beta-ray applicators
Author :
Dias, Simone K. ; Caldas, Linda V.E.
Author_Institution :
Inst. de Pesquisas Energeeeticas e Nucl., Comissao Nacional de Energia Nuclear, Sao Paulo, Brazil
fDate :
6/1/1998 12:00:00 AM
Abstract :
An extrapolation chamber was designed and constructed, and its performance was studied in beta radiation fields. The characteristics of this chamber and the measurement procedures used for the calibration of beta-ray applicators are discussed in this work. The surface dose rate of a planar 90Sr+90Y applicator was also obtained using the extrapolation chamber, and the results were compared with the Amersham calibration certificate. An agreement within 2.7% was verified
Keywords :
beta-ray detection; biomedical equipment; calibration; dosimetry; extrapolation; ionisation chambers; radiation therapy; 90Sr; 90Y; Amersham calibration certificate; Sr; Y; beta-ray applicators; calibration; extrapolation chamber; surface dose rate; Applicators; Beta rays; Calibration; Electrodes; Extrapolation; Instruments; Manufacturing; Measurement standards; NIST; Strontium;
Journal_Title :
Nuclear Science, IEEE Transactions on
