Development and Characterization of a New Cylindrical Ionization Chamber for Dosimetry of 60Co Beams

被引：2
|
作者：
Neves, Lucio P. [1 ]
Perini, Ana P. [1 ]
Caldas, Linda V. E. [1 ]
机构：
[1] Comissao Nacl Energia Nucl IPEN CNEN SP, Inst Pesquisas Energet & Nucl, BR-05508000 Sao Paulo, Brazil
来源：
IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 2013年 / 60卷 / 02期
关键词：
Gamma beam dosimetry; ionization chamber; radiotherapy;
D O I：
10.1109/TNS.2012.2219319
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A cavity ionization chamber, made of PVC coated with graphite, was developed and tested to verify its applicability as a reference dosimeter for Co-60 beams. In order to characterize this new ionization chamber, several tests were made, following international recommendations, as saturation, ion collection efficiency, polarity effect, short- and medium-term stabilities, linearity of response, angular dependence and leakage current. All results obtained were within those recommended internationally, showing that this prototype may be used as a dosimetric standard system at the Calibration Laboratory of IPEN.
引用
收藏
页码：712 / 715
页数：4
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