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

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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
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 shu
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Received: 2010-08-31
Revised: 2010-10-11
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Design and preliminary test of a free-air ionization chamber for low-energy X-ray

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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