Experimental research of deuterium fiber neutron emission on Qiangguang -Ⅰ facility

The experiment of deuterium fiber neutron emission was carried out on Qiangguang-Ⅰ facility. The DD neutron measurement device has two scintillator detectors. The experiment shows that measurement of neutron signal could be influenced by quite strong concomitant hard X-ray during the emission of neutrons. An effective shielding system was established for eliminating disturbance and for protecting the detectors from hard X-ray in aluminum array Z-pinch experiment.The emission of DD neutrons was confirmed by time-of-flight method in shot 4172, which resulted in a neutron yield of about 109 and neutron energy of about(2.45±0.26) MeV.