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Shock waves in gases and liquids have been widely studied for several years. However, shock waves in supercritical (SC) fluids have not been adequately studied due to their special characteristics referring to both gas and liquid under high temperature and pressure. We have been considering pulsed power system as an effective way for generation of shock waves in SC phase and high-density mediums....
Technology for the recycling of precious metals is growing increasingly important due to their scarcity and high industrial utility value. In recent years, a precious metal extraction technology using the mixed solvent of supercritical carbon dioxide and a chelating agent has been researched 1. The experiment is shown in the following steps: 1) The chelating agent dissolves in supercritical carbon...
Recently, all solid-state pulsed power modulators, which are operated with high repetition rate, long lifetime and high reliability, have been developed to be used for industrial applications of plasmas, such as high repetition rate pulsed gas lasers, high energy density plasma (EUV sources) and pulse ozonizer. We have studied and developed high repetition rate compact pulsed power modulator for discharge...
Statistical characteristics of pulsed breakdown voltage of pressurized carbon dioxide up to supercritical condition were investigated experimentally. The tested gap is a sphere-to-sphere and the gap length and sphere diameter are around 140 ??m and 20 mm, respectively. The experimental results show the followings: 1) in the supercritical phase, the scattering in measured breakdown voltage increases...
Summary form only given. The chemical reaction schemes in supercritical fluids have been accomplished in various ways for its industrial applications. On the other hand, it is well known that electric discharge plasmas have higher chemical reactivity as well as benign properties. In recent years, several studies on discharge plasmas in supercritical carbon dioxide have been carried out. It is very...
Summary form only given. Supercritical carbon dioxide has great importance in industrial uses as the extracting solvent of various useful ingredients, reaction solvent and reaction catalyst since it has unique characteristics such as high diffusivity (like a gas) and high solubility (like a liquid). On the other hand, electric discharge plasmas also have higher chemical reactivity. Therefore, the...
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