Numerical study on characteristics of neutron and gamma radiations from implosions on Shenguang Ⅲ laser facility

Zheng Jianhua; Yan Ji; Su Ming; Zhao Zongqing; Jiang Shaoen; Ma Yan; Fu Yuanguang; Li Gang; Zhang Baoyin; Deng Li

doi:10.11884/HPLPB201527.112007

Volume 27 Issue 11

Nov. 2015

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Article Navigation > High Power Laser and Particle Beams > 2015 > 27(11): 112007

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Zheng Jianhua, Yan Ji, Su Ming, et al. Numerical study on characteristics of neutron and gamma radiations from implosions on Shenguang Ⅲ laser facility[J]. High Power Laser and Particle Beams, 2015, 27: 112007. doi: 10.11884/HPLPB201527.112007

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Numerical study on characteristics of neutron and gamma radiations from implosions on Shenguang Ⅲ laser facility

doi: 10.11884/HPLPB201527.112007

1.
Research Center of Laser Fusion,CAEP,P.O.Box 919-986,Mianyang 621900,China;
2.
Department of Engineering Physics,Tsinghua University,Beijing 100084,China;
3.
Center for Applied Physics and Technology,Peking University,Beijing 100871,China;
4.
Institute of Applied Physics and Computational Mathematics,Beijing 100094,China;
5.
Software Center for High Performance Numerical Simulation,CAEP,Beijing 100088,China

Received Date: 2015-07-24
Rev Recd Date: 2015-09-10
Publish Date: 2015-10-27

Abstract

Abstract

A detailed model of Shenguang Ⅲ target bay was developed by JMCT, a 3D neutron and photon transport Monte Carlo code. Using this model, calculations were performed to obtain the spatial distribution, energy spectra and time of flight spectra of fusion neutron and gamma radiations from DD implosions. Characteristics of scattered neutron and gamma radiations were discussed based on the calculated results. In particular, the impacts of neutron noise on down-scattered neutron yield measurement and gamma noise on high energy X-ray radiography were analyzed quantitatively. The results showed that in order to obtain a signal-to-noise ratio better than 10, effective radiation shielding was required for both down scattered neutron yield measurement and high energy X-ray radiography.
- ICF,
- Shenguang Ⅲ,
- neutron,
- gamma,
- Monte Carlo

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