THE MODEL BPS TE SPHERICAL CAVITY IONIZATION CHAMBER

Zhang Zhonglun; Li Fengzhang

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THE MODEL BPS TE SPHERICAL CAVITY IONIZATION CHAMBER

更新时间：2023-04-23

- THE MODEL BPS TE SPHERICAL CAVITY IONIZATION CHAMBER
- Journal of Radiation Research and Radiation Processing Vol. 2, Issue 2, Pages: 52-58(1984)
- 作者机构：
  
  1.中国科学院生物物理研究所
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Zhang Zhonglun, Li Fengzhang. THE MODEL BPS TE SPHERICAL CAVITY IONIZATION CHAMBER. [J]. Journal of Radiation Research and Radiation Processing 2(2):52-58(1984)
DOI：

Zhang Zhonglun, Li Fengzhang. THE MODEL BPS TE SPHERICAL CAVITY IONIZATION CHAMBER. [J]. Journal of Radiation Research and Radiation Processing 2(2):52-58(1984) DOI：

摘要

本实验室研制了BPS型组织等效球形空腔电离室，并对其基本性能进行了测定。该室采用三电极结构并设有TE气体进出口。当工作电压选在250V和500V时，饱和修正因子分别为1.003和1.0007。射线入射角度在120°以内时，响应变化不大于0.5%。对柄效应和光子能量响应进行了研究。测量结果表明，TE气体成分的变化会引起较明显的测量误差。

Abstract

The model BPS TE spherical chambers have been constructed. The basic performances of the chambers have been determined. The chambers are three terminal devices with gas inlet and outlet During operating the chamber at 250 V and 500 V, the saturation correction factors are 1.003 and 1.0007, respectively. The relative change of the response for the chamber is less than 0.5 per cent when the angles of the incident radiation are changed in the range of 0°~120° for the ,60,Co gamma rays. The stem effect and the energy response of the chamber have been studied. The results of measurement show that the variation of the composition of TE-gas will cause noticeable error

关键词

球形电离室饱和特性柄效应组织等效气体能量响应曲线

Keywords

Spherical ionization chamberSaturation characteristicsStem effectTissue equivalent gasEnergy response curve

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CORRECTION FACTORS OF THE BPS TE-TE SPHERICAL CAVITY IONZATION CHAMBER IN 15 MeV NEUTRON FIELD

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Institute of Biopysics, Academia Sinica

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