A boron-lined proportional counter (BLPC) used in a mixed field of reactors

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CHEN Guo-Yun, WEI Zhi-Yong, XIN Yong, LEI Sheng-Jie, HUANG Fu-Cheng, HUANG San-Bo, ZHU Li, ZHAO Jing-Wu and MA Jia-Yi. A boron-lined proportional counter (BLPC) used in a mixed field of reactors[J]. Chinese Physics C, 2012, 36(5): 434-437. doi: 10.1088/1674-1137/36/5/009
CHEN Guo-Yun, WEI Zhi-Yong, XIN Yong, LEI Sheng-Jie, HUANG Fu-Cheng, HUANG San-Bo, ZHU Li, ZHAO Jing-Wu and MA Jia-Yi. A boron-lined proportional counter (BLPC) used in a mixed field of reactors[J]. Chinese Physics C, 2012, 36(5): 434-437.  doi: 10.1088/1674-1137/36/5/009 shu
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Received: 2011-04-11
Revised: 2011-12-02
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A boron-lined proportional counter (BLPC) used in a mixed field of reactors

Abstract: A boron-lined proportional counter (BLPC) with a count rate limit close to the multi-wire proportional counter was manufactured to measure the mixed field around reactors. After measurement with a standard Am-Be neutron source (activity: 100 mCi), the results show that the operating voltage of the BLPC is 800 V, the plateau length is 100 V and the slope is 13.2%/100 V. The width and rise time of the output pulse of the BLPC are 1.26 μs and 370 ns, respectively. When the BLPC works at a count rate of 1.0×105 count/s, the pulse pile-up probability of the BLPC is 3.6%. A clear peak can be seen in the pulse height spectrum of the BLPC. and the performances illustrate that a BLPC working in pulse mode can serve as a source range detector of reactors.

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