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
Published in:
Nuclear Science, IEEE Transactions on
(Volume:45
,
Issue:
3
)
Date of Publication: Jun 1998