薄壁玻璃靶丸低温保气性能研究

 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－196℃环境中，薄壁靶丸的保气半寿命由常温的3~10d延长到100~500d左右，靶丸的表面粗糙度没有明显变化，能满足ICF打靶要求。

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

In room temperature the fuel gas storage half-life of the thin-wall (wall-thicknees less than 1μm) 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 immerged in liquid-nitrogen (LN 2),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℃,the fuel storage half-life of target has been successfully extended to 100～300d from 3～10d.However,the surface roughness of target was not obviously changed.