火药燃气作用下电离种子产生等离子体研究

Research on plasma formation of ionized seeds under the influence of gunpowder gas

为研究电离种子在火药燃气作用下产生等离子体的规律,建立了密闭爆发器(定容)条件下电离种子产生等离子体的数学模型,设计了火药燃气作用下电离种子产生等离子体的试验系统。采用某型火炮发射药和不同种类的电离种子分别进行了试验,结果表明:电离种子在火药燃气作用下可以产生等离子体,加入钾盐和铯盐后电子密度分别为2.25×1018m-3和4.63×1018m-3,铯盐电离效果优于钾盐。通过试验数据和仿真结果比对,发现它们保持在同一数量级内。

In order to study the plasma generation of ionized seeds under the action of gunpowder gas, a mathematical model under the condition of closed bomb(constant volume) was established, and a plasma test system was designed. Experiments were carried out with a certain type of artillery propellant and different kinds of ionized seeds. The results show that the ionized seeds can generate plasma under the action of gunpowder gas,and the electron densities are 2.25×10^18 m^-3 and 4.63×10^18 m^-3 after adding potassium salt and barium salt,respectively. The strontium salt ionization effect is better than the potassium salt. Under the test conditions, the simulation results are roughly in agreement with the test data.