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
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摘要: 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。Abstract: In room temperature the fuel gas storage halflife of the thin-wall (wall-thicknees less than 1m m) 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 (LN2), after being sealed in vacuum. During this period the change of Si 1.74keV 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 - 96℃, 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.
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Key words:
- thin-wall glass target /
- low-temperature storage /
- half-life /
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