Raman spectroscopy of reaction fields induced by plasma in supercritical CO2

Takaaki Tomai; Hiroharu Yui; Kazuo Terashima

doi:10.1063/1.3116622

Raman spectroscopy of reaction fields induced by plasma in supercritical CO₂

Takaaki Tomai, Hiroharu Yui, Kazuo Terashima

FRIS - Advanced Interdisciplinary Research Division

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10 Citations (Scopus)

Abstract

The characteristic microstructures of supercritical fluids, such as density fluctuation near the critical point, in reaction fields induced by low-temperature plasma were investigated by using Raman spectroscopy. It was found that the decrease in the density of CO₂ during plasma generation was less than 0.02 g/cm^> (critical density of CO ₂:0.467 g/ cm3), when compared to the decrease in density of pure CO2 for a wide pressure range from gaseous to supercritical conditions. Moreover, it was experimentally verified that the density fluctuation observed near the critical point persists in the reaction field.

Original language	English
Article number	151501
Journal	Applied Physics Letters
Volume	94
Issue number	15
DOIs	https://doi.org/10.1063/1.3116622
Publication status	Published - 2009

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10.1063/1.3116622

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title = "Raman spectroscopy of reaction fields induced by plasma in supercritical CO2",

abstract = "The characteristic microstructures of supercritical fluids, such as density fluctuation near the critical point, in reaction fields induced by low-temperature plasma were investigated by using Raman spectroscopy. It was found that the decrease in the density of CO2 during plasma generation was less than 0.02 g/cm> (critical density of CO 2:0.467 g/ cm3), when compared to the decrease in density of pure CO2 for a wide pressure range from gaseous to supercritical conditions. Moreover, it was experimentally verified that the density fluctuation observed near the critical point persists in the reaction field.",

author = "Takaaki Tomai and Hiroharu Yui and Kazuo Terashima",

note = "Funding Information: This study was supported financially in part by Grants-in-Aid for Scientific Research (B) (Grant No. 19360326) and Specific Research of Priority Areas (Microplasma) (Grant No. 15075202) from the Ministry of Education, Culture, Sports, Science and Technology and by a Grant-in-Aid for the Research Fellowships for Young Scientists to T. Tomai from the Japan Society for the Promotion of Science.",

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doi = "10.1063/1.3116622",

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T1 - Raman spectroscopy of reaction fields induced by plasma in supercritical CO2

AU - Tomai, Takaaki

AU - Yui, Hiroharu

AU - Terashima, Kazuo

N1 - Funding Information: This study was supported financially in part by Grants-in-Aid for Scientific Research (B) (Grant No. 19360326) and Specific Research of Priority Areas (Microplasma) (Grant No. 15075202) from the Ministry of Education, Culture, Sports, Science and Technology and by a Grant-in-Aid for the Research Fellowships for Young Scientists to T. Tomai from the Japan Society for the Promotion of Science.

PY - 2009

Y1 - 2009

N2 - The characteristic microstructures of supercritical fluids, such as density fluctuation near the critical point, in reaction fields induced by low-temperature plasma were investigated by using Raman spectroscopy. It was found that the decrease in the density of CO2 during plasma generation was less than 0.02 g/cm> (critical density of CO 2:0.467 g/ cm3), when compared to the decrease in density of pure CO2 for a wide pressure range from gaseous to supercritical conditions. Moreover, it was experimentally verified that the density fluctuation observed near the critical point persists in the reaction field.

AB - The characteristic microstructures of supercritical fluids, such as density fluctuation near the critical point, in reaction fields induced by low-temperature plasma were investigated by using Raman spectroscopy. It was found that the decrease in the density of CO2 during plasma generation was less than 0.02 g/cm> (critical density of CO 2:0.467 g/ cm3), when compared to the decrease in density of pure CO2 for a wide pressure range from gaseous to supercritical conditions. Moreover, it was experimentally verified that the density fluctuation observed near the critical point persists in the reaction field.

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Raman spectroscopy of reaction fields induced by plasma in supercritical CO₂

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