Nitrogen Isotope Separation by Plasma Chemical Reaction in N2-O2 DC Glow Discharge

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概要

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• Nitrogen isotope separation using plasma chemical reactions in N2-O2 glow discharge has been investigated. DC power supply was used to generate the glow discharge. In this study, the effects of parameters such as oxygen concentration, discharge pressure and discharge current on this process are studied experimentally. We determined that the separation factor correlates strongly with the discharge current, of which the optimum value is 0.4 mA for the highest separation factor β = 1.57. The conversion of nitrogen increases with increases in the discharge current and oxygen concentration. The conversion of oxygen is found with a value of nearly 100% and almost all of the oxygen input was converted into ozone molecules. The electron density also is estimated and its influence on the isotope separation is discussed. The results of this experimental study correlate with those of the theoretical study by Adamovich et al. concerning the relationship of electron density and separation factor.

著者

• Suzuki Masaaki

  Department Of Atherosclerosis Metabolism And Clinical Nutrition National Cardiovascular Center

• Mori Shinsuke

  Department Of Chemical Engineering Graduate School Of Science And Engineering Tokyo Institute Of Tec

• Nguyen Nga

  Department Of Anthropology California State University Fullerton

• ICHIKAWA Masashi

  Department of Chemical Engineering, Tokyo Institute of Technology

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