强光一号装置单氘丝中子发射实验研究
Experimental research of deuterium fiber neutron emission on Qiangguang -Ⅰ facility
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摘要: 介绍了利用飞行时间技术测量Z箍缩装置单氘丝中子发射。实验发现，Z箍缩中子发射过程中,伴随产生很强的硬X射线，利用铝丝阵产生硬X射线的实验，建立较好的硬X射线屏蔽,大大减弱了它的辐射强度。所采用的双闪烁探测器中子探测系统，进行了3个发次的单氘丝负载实验，确认产生了聚变氘氘中子。4172发次实验测量结果表明，中子产额1.5×109，中子能量为(2.45±0.26) MeV。实验结合分幅照相数据分析认为，峰电流和负载未能很好匹配，等离子体存在不稳定现象。Abstract: 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.
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Key words:
- z-pinch /
- deuterium fiber /
- neutron /
- scintillant detecteor
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