Electrical, Thermal and Optical Diagnostics of an Atmospheric Plasma Jet System
Plasma diagnostics of atmospheric plasmas is a key tool in helping to understand processing performance issues. This paper presents an electrical, optical and thermographic imaging study of the PlasmaStream atmospheric plasma jet system. The system was found to exhibit three operating modes; one con...
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Veröffentlicht in: | Plasma chemistry and plasma processing 2010-10, Vol.30 (5), p.537-552 |
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creator | Nwankire, C. E. Law, V. J. Nindrayog, A. Twomey, B. Niemi, K. Milosavljević, V. Graham, W. G. Dowling, D. P. |
description | Plasma diagnostics of atmospheric plasmas is a key tool in helping to understand processing performance issues. This paper presents an electrical, optical and thermographic imaging study of the PlasmaStream atmospheric plasma jet system. The system was found to exhibit three operating modes; one constricted/localized plasma and two extended volume plasmas. At low power and helium flows the plasma is localized at the electrodes and has the electrical properties of a corona/filamentary discharge with electrical chaotic temporal structure. With increasing discharge power and helium flow the plasma expands into the volume of the tube, becoming regular and homogeneous in appearance. Emission spectra show evidence of atomic oxygen, nitric oxide and the hydroxyl radical production. Plasma activated gas temperature deduced from the rotational temperature of nitrogen molecules was found to be of order of 400 K: whereas thermographic imaging of the quartz tube yielded surface temperatures between 319 and 347 K. |
doi_str_mv | 10.1007/s11090-010-9236-5 |
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Emission spectra show evidence of atomic oxygen, nitric oxide and the hydroxyl radical production. 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At low power and helium flows the plasma is localized at the electrodes and has the electrical properties of a corona/filamentary discharge with electrical chaotic temporal structure. With increasing discharge power and helium flow the plasma expands into the volume of the tube, becoming regular and homogeneous in appearance. Emission spectra show evidence of atomic oxygen, nitric oxide and the hydroxyl radical production. Plasma activated gas temperature deduced from the rotational temperature of nitrogen molecules was found to be of order of 400 K: whereas thermographic imaging of the quartz tube yielded surface temperatures between 319 and 347 K.</description><subject>Atmospherics</subject><subject>Characterization and Evaluation of Materials</subject><subject>Chemistry</subject><subject>Chemistry and Materials Science</subject><subject>Classical Mechanics</subject><subject>Electric power generation</subject><subject>Helium</subject><subject>Hydroxyl radicals</subject><subject>Imaging</subject><subject>Inorganic Chemistry</subject><subject>Mechanical Engineering</subject><subject>Original Paper</subject><subject>Thermography</subject><subject>Tubes</subject><issn>0272-4324</issn><issn>1572-8986</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNp9kD1PwzAQhi0EEqXwA9i8sRA427WTjFUpX6oUJMpsuY5TUuULnzv03-MozEx3Zz_vSfcQcsvggQGkj8gY5JAAgyTnQiXyjMyYTHmS5Zk6JzPgsV8IvrgkV4gHiCCIdEaKdeNs8LU1zT3dfjvfmoaarqTFEMZH-lSbfddjHJD2Vfyiy9D2OES0tvSjMdga-u4C_TxhcO01uahMg-7mr87J1_N6u3pNNsXL22q5SazIVEiUqSopSp6BKq10IFQunS2tMWD4TqYWSqZEZsHyCFgBu1LsGK8U55VRZS7m5G7aO_j-5-gw6LZG65rGdK4_os4hzYVMpYwkm0jre0TvKj34ujX-pBno0Z2e3OmoRI_u9JjhUwYj2-2d14f-6Lt40D-hXxfQcck</recordid><startdate>20101001</startdate><enddate>20101001</enddate><creator>Nwankire, C. 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J.</creatorcontrib><creatorcontrib>Nindrayog, A.</creatorcontrib><creatorcontrib>Twomey, B.</creatorcontrib><creatorcontrib>Niemi, K.</creatorcontrib><creatorcontrib>Milosavljević, V.</creatorcontrib><creatorcontrib>Graham, W. G.</creatorcontrib><creatorcontrib>Dowling, D. P.</creatorcontrib><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Plasma chemistry and plasma processing</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Nwankire, C. E.</au><au>Law, V. J.</au><au>Nindrayog, A.</au><au>Twomey, B.</au><au>Niemi, K.</au><au>Milosavljević, V.</au><au>Graham, W. G.</au><au>Dowling, D. P.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Electrical, Thermal and Optical Diagnostics of an Atmospheric Plasma Jet System</atitle><jtitle>Plasma chemistry and plasma processing</jtitle><stitle>Plasma Chem Plasma Process</stitle><date>2010-10-01</date><risdate>2010</risdate><volume>30</volume><issue>5</issue><spage>537</spage><epage>552</epage><pages>537-552</pages><issn>0272-4324</issn><eissn>1572-8986</eissn><abstract>Plasma diagnostics of atmospheric plasmas is a key tool in helping to understand processing performance issues. This paper presents an electrical, optical and thermographic imaging study of the PlasmaStream atmospheric plasma jet system. The system was found to exhibit three operating modes; one constricted/localized plasma and two extended volume plasmas. At low power and helium flows the plasma is localized at the electrodes and has the electrical properties of a corona/filamentary discharge with electrical chaotic temporal structure. With increasing discharge power and helium flow the plasma expands into the volume of the tube, becoming regular and homogeneous in appearance. Emission spectra show evidence of atomic oxygen, nitric oxide and the hydroxyl radical production. Plasma activated gas temperature deduced from the rotational temperature of nitrogen molecules was found to be of order of 400 K: whereas thermographic imaging of the quartz tube yielded surface temperatures between 319 and 347 K.</abstract><cop>Boston</cop><pub>Springer US</pub><doi>10.1007/s11090-010-9236-5</doi><tpages>16</tpages></addata></record> |
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subjects | Atmospherics Characterization and Evaluation of Materials Chemistry Chemistry and Materials Science Classical Mechanics Electric power generation Helium Hydroxyl radicals Imaging Inorganic Chemistry Mechanical Engineering Original Paper Thermography Tubes |
title | Electrical, Thermal and Optical Diagnostics of an Atmospheric Plasma Jet System |
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