稠密等离子体焦点装置研制

Development of dense plasma focus device

摘要: 研制了一台用作脉冲中子源的稠密等离子体焦点装置(DPF)，其放电室为Mather型结构。介绍了整个装置的工作原理及系统组成，详细论述了放电室的设计方法。实验结果表明，在550~600 Pa充氘压力范围下，当储能电容充电电压大于19 kV时，装置的平均中子产额大于5.0×10⁸(D-D)中子/脉冲，中子脉冲宽度(FWHM)为(40±5) ns。该装置能用于中子、伽马辐射诊断中探测系统灵敏度实验研究，也可用于开展快中子照相、中子活化分析以及单粒子效应等方面的研究工作。

Abstract: A dense plasma focus (DPF) device with a Mather chamber was developed. The working principle and system composition of the DPF device are introduced, and the design of the DPF chamber is discussed in detail. The following technical parameters of the device were achieved: average neutron yield greater than 5.0×10⁸ /pulse(D-D) with neutron pulse width(FWHM) (40±5) ns when the charging voltage of the primary capacitors is greater than 19 kV and the deuterium gas pressure is 550-600 Pa. The device can be used for calibration of detector sensitivity in neutron and gamma radiation diagnostics, as well as to carry out researches on fast neutron radiography, neutron activation analysis and single event effect.