Experimental study of high yield neutron source based on multi reaction channels

Cui Bo; Zhang Zhimeng; Dai Zenghai; Qi Wei; Deng Zhigang; Huang Hua; He Shukai; Wang WeiWu; Teng Jian; Zhang Bo; Liu Hongjie; Chen Jiabin; Xiao Yunqing; Wu Di; Ma Wenjun; Hong Wei; Su Jingqin; Zhou Weimin; Gu Yuqiu

doi:10.11884/HPLPB202133.210330

Volume 33 Issue 9

Sep. 2021

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Article Navigation > High Power Laser and Particle Beams > 2021 > 33(9): 094004

Cui Bo, Zhang Zhimeng, Dai Zenghai, et al. Experimental study of high yield neutron source based on multi reaction channels[J]. High Power Laser and Particle Beams, 2021, 33: 094004. doi: 10.11884/HPLPB202133.210330

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Cui Bo, Zhang Zhimeng, Dai Zenghai, et al. Experimental study of high yield neutron source based on multi reaction channels[J]. High Power Laser and Particle Beams, 2021, 33: 094004. doi: 10.11884/HPLPB202133.210330

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Experimental study of high yield neutron source based on multi reaction channels

doi: 10.11884/HPLPB202133.210330

1.
Science and Technology on Plasma Physics Laboratory, Research Center of Laser Fusion, CAEP, Mianyang 621900, China
2.
State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China

Received Date: 2021-07-30
Rev Recd Date: 2021-09-03

Available Online: 2021-09-15

Publish Date: 2021-09-15

Abstract

Abstract

The short-pulse neutron source based on ultra-short and ultra-intense laser is an ideal neutron source for ultra-fast neutron detection. For many applications of the novel laser neutron source, the neutron yield now becomes a major limitation. It is proposed here that, based on the Target Normal Sheath Acceleration mechanism (TNSA) and the beam-target reaction scheme, the adoption of composite component target LiD as the neutron converter can be an effective path to enhance the neutron yield. Compared with the traditional LiF converter, which has two typical reaction channels p-Li and d-Li, the use of LiD converter has the advantages on introducing two more reactions channels, i.e., p-D and d-D. Therefore, more reaction channels are expected to be beneficial for increasing the neutron yield. It is experimentally demonstrated that by using LiD converter, an enhancement of 2−3 folds of neutron yield is achieved compared with the LiF converter. As a result, a neutron beam with the highest yield of 5.2×10⁸ sr⁻¹ with a forward beamed distribution is well obtained. The contribution of multi reaction channels is also identified, indicating the enhancement of neutron yield mainly comes from the p-D reaction.
- laser pulse neutron source,
- neutron yield,
- neutron converter,
- multi reaction channels

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References(18)

References

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