Design and preliminary test of a free-air ionization chamber for low-energy X-ray

WU Jin-Jie; YANG Yuan-Di; WANG Pei-Wei; CHEN Jing; LIU Jia-Cheng

doi:10.1088/1674-1137/35/6/013

Chinese Physics C> 2011, Vol. 35> Issue(6) : 576-579 DOI: 10.1088/1674-1137/35/6/013

Design and preliminary test of a free-air ionization chamber for low-energy X-ray

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Abstract：
A free-air ionization chamber in low-energy X-ray has been designed and manufactured at the National Institute of Metrology (NIM, China) according to the defination of air-kerma. The results of a preliminary test show that the leakage current of ionization chamber is around 2 × 10^-15A, and the correction factor of ion recombination for the ionization chamber is also obtained. The free-air ionization chamber is suitable for the primary standard in low-energy X-rays.

References

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Burns D T, TIAN Zhong-Qing, LU Ya-Zhu et al. Metrolo-gia, 2007, 44(Tech. Suppl. 06008): 1-132 De Almeida C E. Niatel M T. Rapport BIPM-86/12, 1986. 1-203 Boutillon M. Phys. Med. Biol., 1998, 43: 2061-20724 Burns D T, Roger P. CCRI(I)/01-07, 2001. 1-105 Burns D T, O'Brien M. J. Res. Natl. Inst. Stand. Technol., 2006, 111(5): 385-3916 Boutillon M, Burns D T, Moretti C J et al. Rapport BIPM-02/08, 2002. 1-97 Burns D T, Bueermann L, Kramer H M et al. Rapport BIPM-01/08, 2001. 1-10

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WU Jin-Jie, YANG Yuan-Di, WANG Pei-Wei, CHEN Jing and LIU Jia-Cheng. Design and preliminary test of a free-air ionization chamber for low-energy X-ray[J]. Chinese Physics C, 2011, 35(6): 576-579. doi: 10.1088/1674-1137/35/6/013

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Received: 2010-08-31
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Design and preliminary test of a free-air ionization chamber for low-energy X-ray

Received Date: 2010-08-31

Accepted Date: 2010-10-11

Available Online: 2011-06-05

Abstract: A free-air ionization chamber in low-energy X-ray has been designed and manufactured at the National Institute of Metrology (NIM, China) according to the defination of air-kerma. The results of a preliminary test show that the leakage current of ionization chamber is around 2 × 10^-15A, and the correction factor of ion recombination for the ionization chamber is also obtained. The free-air ionization chamber is suitable for the primary standard in low-energy X-rays.

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Design and preliminary test of a free-air ionization chamber for low-energy X-ray

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Design and preliminary test of a free-air ionization chamber for low-energy X-ray

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