以强光一号等离子体源(电缆枪)为研究对象，采用电荷收集器(法拉第杯)对强光一号等离子体源性能参数进行测量。实验结果表明：等离子体发射密度与电缆等离子体枪枪芯到枪口的距离正相关，而发射速度与电缆等离子体枪枪芯到枪口的距离负相关；增大电缆枪驱动电压时，等离子体发射密度增速远小于驱动电流增速。重复性研究表明，对由数十支电缆枪组成的等离子体源而言，单支电缆枪放电分散性对其输出等离子体整体分布均匀性影响不大。不确定度分析表明，通过多次重复实验求平均值，可以有效减小实验结果的不确定度，发射密度测量结果的合成标准不确定度在10%以内。

The plasma source (cable guns) of the plasma opening switch(POS) on QiangguangⅠgenerator was chosen as the study object. The plasma source performance was investigated by using charge collectors. Experimental results show that the plasma ejection density is positively correlated with the structural parameter, the distance between gun core tip and muzzle plane, and the plasma ejection velocity is negatively correlated with the parameter. The increasing rate of plasma ejection density is less than that of drive current. As far as a plasma source with tens of cable plasma guns is concerned, the influence of single cable gun’s discharge dispersancy on plasma uniformity is little. Analysis of uncertainty shows that the uncertainty of measurement can be reduced by increasing the number of experiments and averaging the results. The combined standard uncertainty of plasma ejection density is less than 10%.