Title :
Study for MDS properties of pressured CO2 to supercritical state and DC breakdown mechanism
Author :
Yang, Z.B. ; Zhang, Clara H. ; MacAlpine, J.M.K.
Author_Institution :
Electr. Eng. Dept., Harbin Inst. of Technol., Harbin, China
Abstract :
Summary form only given. The generation of DC discharge in supercritical carbon dioxide using a point-plane electrode with the gap distance tens of mircometer is studied experimentally. The results reveal a strange phenomenon that there is a slightly drop of breakdown voltages in vicinity of supercritical phase. It is explained that the clusters formation and diffusion ability in SC CO2 (supercritical carbon dioxide) effect the formation of electron avalanche by molecule dynamics simulation. Compared with high pressure gas phase and liquid phase, it can be concluded that DC discharge in SC CO2 phase applied with lower breakdown voltage.
Keywords :
carbon compounds; diffusion; electron avalanches; molecular dynamics method; plasma simulation; plasma sources; CO2; DC breakdown mechanism; DC discharge generation; MDS properties; breakdown voltage; cluster formation; diffusion ability; electron avalanche formation; gap distance; high pressure gas phase; high pressure liquid phase; moleculuar dynamics simulation; point-plane electrode; pressured carbon dioxide; supercritical carbon dioxide; supercritical state; Carbon dioxide; Discharges (electric); Electrical engineering; Electrodes; Electronic mail; Mechanical factors; DC discharge; cluster; diffusion; molecule dynamics method;
Conference_Titel :
Plasma Science (ICOPS), 2012 Abstracts IEEE International Conference on
Conference_Location :
Edinburgh
Print_ISBN :
978-1-4577-2127-4
Electronic_ISBN :
0730-9244
DOI :
10.1109/PLASMA.2012.6384105
