Spectroscopic characteristics of pulsed arc discharge in high-pressure CO<inf>2</inf> up to supercritical phase
Spectroscopic characteristics of pulsed arc discharge in high-pressure CO<inf>2</inf> up to supercritical phase
复制标题
高压CO<inf>2</inf>至超临界相脉冲电弧放电的光谱特性
DOI：
10.1109/icdl.2017.8124614
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Kiyan T.
中科院分区：
文献类型：
--
作者：
Furusato T.;Ashizuka N.;Kamagahara T.;Fujishima T.;Yamashita T.;Sasaki M.;Kiyan T.
本研究描述了在高压CO2（包括超临界（SC）相（1.6-8.1 MPa））中脉冲电弧放电的光谱测量。将正纳秒脉冲电压施加到针-面电极。OI在777 nm处的光谱增宽从气体到亚临界相增加，并且在CO2的临界条件附近减小。这种下降被认为是由导热系数的临界异常引起的。此外，脉冲电弧放电发射强度的空间分布处理从拍摄的图像。基本上，发射强度与光谱展宽一致。在SC相（8.1MPa）中观察到Brilliant排放。
This study describes spectroscopic measurement of pulsed arc discharge in high pressure CO2including supercritical (SC) phase (1.6-8.1 MPa). A positive nanosecond pulsed voltage was applied to a needle-to-plane electrode. Spectral broadening of OI at 777 nm increased from gas to sub-critical phase and decreased around the critical condition of CO2. The decrease was presumed to be caused by critical anomaly of thermal conductivity. In addition, spatial distribution of pulsed arc discharge emission intensity was processed from images taken. Basically, emission intensity was consistent with spectral broadening. Brightest emissions were observed in the SC phase (8.1 MPa).