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
Citation:
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
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
Citation:
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
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.