Study of gamma irradiation effect on the 4H-SiC detector

Li Zheng; Wu Jian; Bai Zhongxiong; Wu Kunlin; Fan Yikui; Jiang Yong; Yin Yanpeng; Xie Qilin; Lei Jiarong

doi:10.11884/HPLPB201931.180345

Volume 31 Issue 8

Aug. 2019

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Li Zheng, Wu Jian, Bai Zhongxiong, et al. Study of gamma irradiation effect on the 4H-SiC detector[J]. High Power Laser and Particle Beams, 2019, 31: 086002. doi: 10.11884/HPLPB201931.180345

Citation:

Li Zheng, Wu Jian, Bai Zhongxiong, et al. Study of gamma irradiation effect on the 4H-SiC detector[J]. High Power Laser and Particle Beams, 2019, 31: 086002. doi: 10.11884/HPLPB201931.180345

Li Zheng, Wu Jian, Bai Zhongxiong, et al. Study of gamma irradiation effect on the 4H-SiC detector[J]. High Power Laser and Particle Beams, 2019, 31: 086002. doi: 10.11884/HPLPB201931.180345

Citation:

Li Zheng, Wu Jian, Bai Zhongxiong, et al. Study of gamma irradiation effect on the 4H-SiC detector[J]. High Power Laser and Particle Beams, 2019, 31: 086002. doi: 10.11884/HPLPB201931.180345

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Study of gamma irradiation effect on the 4H-SiC detector

doi: 10.11884/HPLPB201931.180345

Li Zheng^{1, 2
,},
Wu Jian^{1, 2},
Bai Zhongxiong^{1, 2},
Wu Kunlin^{1, 2},
Fan Yikui^{1, 2},
Jiang Yong^{1, 2},
Yin Yanpeng^{1, 2},
Xie Qilin^{1, 2},
Lei Jiarong^{1, 2}

1.
Institute of Nuclear Physics and Chemistry, CAEP, Mianyang 621900, China
2.
Key Laboratory of Neutron Physics, CAEP, Mianyang 621900, China

Received Date: 2018-11-30
Rev Recd Date: 2019-04-28
Publish Date: 2019-08-15

Abstract

Abstract

To investigate 4H-SiC detector’s resistance to gamma irradiation, the detector was irradiated by ⁶⁰Co gamma-ray(about 4×10⁵ Ci), and the maximum cumulative dose was 1 MGy. The detector’s I-V characteristics and its performance in detecting charged particles were tested after gamma irradiation. The forward current increased and the reverse current decreased as the cumulative dose was increased. The ideal factor and Schottky barrier height were extracted from forward I-V curves, and the result showed that ideal factor increased and Schottky barrier height decreased after irradiation. The detector was exposed to ²⁴¹Am source, and it was found that the detector’s performance degraded slightly after gamma irradiation. However, the detector behaved well in detection after it received gamma exposures at a dose of 1 MGy: its charge collection efficiency was 93.55% and its energy resolution was 2.32% in detecting alpha particles of 5.486 MeV. Therefore it has been proved that 4H-SiC detector has good resistance to gamma irradiation.
- 4H-SiC detector,
- gamma irradiation,
- I-V characteristics,
- alpha detector

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References(14)

References

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