薄壁玻璃靶丸低温保气性能研究

Fuel retention properties of thin-wall glass target in low temperature

对薄壁玻璃靶丸在液氮保存状态下保气性能进行了研究。实验结果表明 :在 -1 96℃环境中 ,薄壁靶丸的保气半寿命由常温的 3～ 1 0 d延长到 1 0 0～ 5 0 0 d左右 ,靶丸的表面粗糙度没有明显变化 ,能满足

In room temperature the fuel gas storage half-life of the thin-wall (wall-thickness less than 1 μm) glass microsphere is only a few days, it is difficult to be used for ICF. To efficiently prolong the half-life of such type targets, and meet the need of ICF experiments, the special device for storing the targets was developed. All the targets are immersed in liquid-nitrogen (LN2), after being sealed in vacuum. During this period the change of Si 1.74 keV X-ray counts were measured a few times with the low energy X-ray multi-channel analyzer. The results of experiment indicate that, in the environment of -196°C, the fuel storage half-life of target has been successfully extended to 100-300 d from 3-10 d. However, the surface roughness of target was not obviously changed.