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研制了氩壁稳电弧等离子体装置,其最大功率25kW,电流0～140A,4小时内电流的稳定性0.005%,纹波系数0.1%。在可靠的状态诊断实验基础上测试了主要性能。当压力为0.1～0.5MPa、电流不小于20A 时,电弧轴心区等离子体是LTE(局部热力学平衡)的。60A 电流下4小时内 ArI430.0nm 谱线辐射的稳定性±1.0%,1个月内的再现性±1.8%,温度可调范围10000～16000K,不确定度0.4%。同时测定了某些特定谱线斯塔克宽度与电子密度的实验关系。结果表明,性能完全达到了建立10000～15000K温度和近紫外高强度及真空紫外辐射标准的要求。
The Argon wall stable arc plasma device has been developed. Its maximum power is 25kW, current is 0 ~ 140A, current stability is 0.005% within 4 hours, ripple coefficient is 0.1%. The main performance was tested on the basis of a reliable state diagnostic experiment. When the pressure is 0.1 ~ 0.5MPa, the current is not less than 20A, the arc axis plasma is LTE (local thermodynamic equilibrium). The stability of ArI430.0nm line radiation within 4 hours at 60A was ± 1.0%, the reproducibility within 1 month was ± 1.8%, the temperature was adjustable from 10000 to 16000K, and the uncertainty was 0.4%. The experimental relationship between the Stark width and the electron density of some specific spectra was also determined. The results show that the performance has fully reached the establishment of 10000 ~ 15000K temperature and near-ultraviolet high-intensity and vacuum ultraviolet radiation standards.