Effect of radioactive material <sup>137</sup>Cs on microwave breakdown characteristics

Chen Zhiguo; Yan Eryan; Liu Xingchen; Meng Fanbao; Huang Nuoci; Yang Hao; Bao Xiangyang

doi:10.11884/HPLPB202234.220100

Volume 34 Issue 11

Sep. 2022

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Chen Zhiguo, Yan Eryan, Liu Xingchen, et al. Effect of radioactive material 137Cs on microwave breakdown characteristics[J]. High Power Laser and Particle Beams, 2022, 34: 113004. doi: 10.11884/HPLPB202234.220100

Citation:

Chen Zhiguo, Yan Eryan, Liu Xingchen, et al. Effect of radioactive material ¹³⁷Cs on microwave breakdown characteristics[J]. High Power Laser and Particle Beams, 2022, 34: 113004. doi: 10.11884/HPLPB202234.220100

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Effect of radioactive material ¹³⁷Cs on microwave breakdown characteristics

doi: 10.11884/HPLPB202234.220100

Chen Zhiguo^{1, 2
,},
Yan Eryan^{2, 3
,
,},
Liu Xingchen^{1, 2},
Meng Fanbao²,
Huang Nuoci^{1, 2},
Yang Hao^{1, 2},
Bao Xiangyang²

1.
Graduate School of China Academy of Engineering Physics, Mianyang 621999, China
2.
Institute of Applied Electronics, CAEP, Mianyang 621900, China
3.
Science and Technology on High Power Microwave Laboratory, Mianyang 621900, China

Received Date: 2022-05-16
Accepted Date: 2022-06-30
Rev Recd Date: 2022-06-16

Available Online: 2022-07-05

Publish Date: 2022-09-20

Abstract

Abstract

In view of the limitations such as close effective distance and low efficiency of the existing radioactive source detection methods, high-power microwave (HPM) is used to detect radioactive materials over a long distance because of its good spatial radiation characteristics. In this paper, the principle of microwave pulsed plasma breakdown and the influence of free electrons on breakdown characteristics are explained, the process of free electrons generated by the decay of radioactive source ¹³⁷Cs is analyzed, and the HPM breakdown time and breakdown threshold are presented. Based on the HPM atmospheric breakdown plasma experimental apparatus, HPM irradiation experiments were performed multiple times in the low-pressure environment of 6000 Pa, 7000 Pa and 8000 Pa with presence and absence of radioactive sources. Experimental results show that the presence of a radioactive source lowers the HPM breakdown threshold by approximately 10% and can reduce the breakdown time by approximately 50%.
- radioactive substance,
- high-power microwave,
- breakdown electric field threshold,
- breakdown time

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References(17)

References

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