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首页> 外文期刊>Plasma and Fusion Research >Analysis on the Sensitivity of the ASDEX Type Ionization Gauge in Mixed Radiator Gases of Divertor Simulators
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Analysis on the Sensitivity of the ASDEX Type Ionization Gauge in Mixed Radiator Gases of Divertor Simulators

机译：分流器模拟器混合辐射气体中ASDEX型电离规的灵敏度分析

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摘要

The sensitivity of the ASDEX type ionization gauge (AIG) in the mixture of argon and hydrogen gas, which is a candidate of radiator gas in the radiative divertor, is studied. In a small vacuum chamber, the sensitivity of the AIG is calibrated against capacitance-manometers, which have constant sensitivity for all gas species. Increase of the output signal AIG was observed in the mixture of 25% Ar and 75% Hsub2/sub, although the actual sensitivity of the gauge against gas pressure is degraded. In the gas pressure larger than 0.8 Pa, the degradation of the sensitivity will be the main concern of the measurements. The results indicated that the molecular ions produced by the collision between the metastable argon atom and hydrogen molecule is the main cause of the change of the sensitivity. The change of sensitivity is analyzed by varying the collision energy of the electrons and the ionization cross-section of the ArH molecular ion is evaluated.
机译：研究了ASDEX型电离规（AIG）在氩气和氢气的混合物中的敏感性，而氩气和氢气的混合物是辐射分流器中的辐射气体的候选者。在小型真空室中，AIG的灵敏度是针对电容压力计进行校准的，电容压力计对所有气体种类均具有恒定的灵敏度。在25％Ar和75％H 2 的混合物中观察到输出信号AIG的增加，尽管该仪表对气压的实际灵敏度下降了。在气压大于0.8 Pa的情况下，灵敏度的下降将是测量的主要问题。结果表明，亚稳氩原子与氢分子碰撞产生的分子离子是灵敏度变化的主要原因。通过改变电子的碰撞能量来分析灵敏度的变化，并评估ArH分子离子的电离截面。

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