Gas pressure measurement in ICF cryogenic target micro-tube gas-filling process
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摘要: 利用自主设计的冷冻靶微管充气系统，通过在常温环境下向靶盒注入氘气，研究了充气管两端压强差与充气管长度、充气速率及充气时间之间的相互关系。研究表明：微管注入法充气过程中，充气管两端的压强差先增大然后减小最终趋于0;充气管长度越小，充气速率越大，充气管两端压强差达到平衡所需的时间越短。该实验结果与根据修正后的Hagen-Poiseuille方程所得到的理论计算值相吻合。Abstract: A self-designed micro-tube gas-filling system was used to fill cryogenic targets with deuterium gas in normal temperature. The relationships between difference of gas pressure at the two ends of gas-filling tube and tube length, gas-filling rate and gas-filling time were studied. The results show that the gas-pressure difference first increases and ultimately decreases tozero, The time required for gas pressure equilibrium tends to be shorter when gas filling tube length decreases and gas-filling rate increases. The experimental results are in good agreement with the prediction on the basis of the Hagen-Poiseuille equation.
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Key words:
- inertial confinement fusion /
- cryogenic targets /
- gas-filling /
- pressure difference
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