Extended plateaux in the vibrational and electron distribution functions of O2/O reacting plasmas in discharge and post-discharge conditions
An accurate state to state model describing the plasma kinetics in reacting oxygen plasma has been built up giving particular attention to vibrational–translational O–O2 processes, as well as O–O2(v) dissociation and recombination, direct electron impact dissociation, and resonant electron–vibration...
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creator | Pietanza, L. D. Colonna, G. Capitelli, M. |
description | An accurate state to state model describing the plasma kinetics in reacting oxygen plasma has been built up giving particular attention to vibrational–translational O–O2 processes, as well as O–O2(v) dissociation and recombination, direct electron impact dissociation, and resonant electron–vibration (e–V) processes for O2. Moderate and low pressure situations are investigated for both discharge and post-discharge conditions. In both cases, an important role of three body recombination of O atoms and of multi-quantum e–V processes is observed, the latter being particularly important at low pressure. The interplay of the different processes forms an extended plateaux on the vibrational distribution function (vdf) of O2 in both discharge and post-discharge conditions. A comparison between our calculated vdf and the corresponding experimental and theoretical results of Annusova et al. shows a good qualitative agreement. Declining plateaux are also observed in the electron energy distribution function. In this case, superelastic electronic collisions involving high lying electronic states of the O atom form important maxima over the declining plateau. |
doi_str_mv | 10.1063/5.0015185 |
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D. ; Colonna, G. ; Capitelli, M.</creator><creatorcontrib>Pietanza, L. D. ; Colonna, G. ; Capitelli, M.</creatorcontrib><description>An accurate state to state model describing the plasma kinetics in reacting oxygen plasma has been built up giving particular attention to vibrational–translational O–O2 processes, as well as O–O2(v) dissociation and recombination, direct electron impact dissociation, and resonant electron–vibration (e–V) processes for O2. Moderate and low pressure situations are investigated for both discharge and post-discharge conditions. In both cases, an important role of three body recombination of O atoms and of multi-quantum e–V processes is observed, the latter being particularly important at low pressure. The interplay of the different processes forms an extended plateaux on the vibrational distribution function (vdf) of O2 in both discharge and post-discharge conditions. A comparison between our calculated vdf and the corresponding experimental and theoretical results of Annusova et al. shows a good qualitative agreement. Declining plateaux are also observed in the electron energy distribution function. In this case, superelastic electronic collisions involving high lying electronic states of the O atom form important maxima over the declining plateau.</description><identifier>ISSN: 1070-664X</identifier><identifier>EISSN: 1089-7674</identifier><identifier>DOI: 10.1063/5.0015185</identifier><identifier>CODEN: PHPAEN</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Discharge ; Distribution functions ; Electron distribution ; Electron energy distribution ; Electron states ; Low pressure ; Oxygen plasma ; Plasma physics ; Plasmas (physics) ; Qualitative analysis ; Reaction kinetics ; Superelasticity</subject><ispartof>Physics of plasmas, 2020-09, Vol.27 (9)</ispartof><rights>Author(s)</rights><rights>2020 Author(s). 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D.</creatorcontrib><creatorcontrib>Colonna, G.</creatorcontrib><creatorcontrib>Capitelli, M.</creatorcontrib><title>Extended plateaux in the vibrational and electron distribution functions of O2/O reacting plasmas in discharge and post-discharge conditions</title><title>Physics of plasmas</title><description>An accurate state to state model describing the plasma kinetics in reacting oxygen plasma has been built up giving particular attention to vibrational–translational O–O2 processes, as well as O–O2(v) dissociation and recombination, direct electron impact dissociation, and resonant electron–vibration (e–V) processes for O2. Moderate and low pressure situations are investigated for both discharge and post-discharge conditions. In both cases, an important role of three body recombination of O atoms and of multi-quantum e–V processes is observed, the latter being particularly important at low pressure. The interplay of the different processes forms an extended plateaux on the vibrational distribution function (vdf) of O2 in both discharge and post-discharge conditions. A comparison between our calculated vdf and the corresponding experimental and theoretical results of Annusova et al. shows a good qualitative agreement. Declining plateaux are also observed in the electron energy distribution function. In this case, superelastic electronic collisions involving high lying electronic states of the O atom form important maxima over the declining plateau.</description><subject>Discharge</subject><subject>Distribution functions</subject><subject>Electron distribution</subject><subject>Electron energy distribution</subject><subject>Electron states</subject><subject>Low pressure</subject><subject>Oxygen plasma</subject><subject>Plasma physics</subject><subject>Plasmas (physics)</subject><subject>Qualitative analysis</subject><subject>Reaction kinetics</subject><subject>Superelasticity</subject><issn>1070-664X</issn><issn>1089-7674</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNqdkMlKA0EQhhtRMEYPvkGDJ4VJep3lKCEuEMhFwdvQ00vSYTI9dveE-A4-tDNJIHdPVVR99UH9ANxjNMEopVM-QQhznPMLMMIoL5Iszdjl0GcoSVP2dQ1uQtgghFjK8xH4ne-jbpRWsK1F1KLbQ9vAuNZwZysvonWNqKFoFNS1ltG7BiobordVN-yg6Ro5NAE6A5dkuoRei37SrAZh2Iow-PoTuRZ-pQ-m1oWYnEfSNcoeHLfgyog66LtTHYPPl_nH7C1ZLF_fZ8-LRBJGYsILUzGZkdxghgxVShsuCWZZIWmVS2FEoYjUhdEkp9hkXArKME8rQjmvOKZj8HD0tt59dzrEcuM63z8aSsIYRjQriqynHo-U9C4Er03ZersV_qfEqBzCLnl5Crtnn45skDYeUvsfvHP-DJatMvQPx7qQPA</recordid><startdate>202009</startdate><enddate>202009</enddate><creator>Pietanza, L. D.</creator><creator>Colonna, G.</creator><creator>Capitelli, M.</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-4993-4838</orcidid><orcidid>https://orcid.org/0000-0002-9765-0311</orcidid></search><sort><creationdate>202009</creationdate><title>Extended plateaux in the vibrational and electron distribution functions of O2/O reacting plasmas in discharge and post-discharge conditions</title><author>Pietanza, L. D. ; Colonna, G. ; Capitelli, M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c242t-59fb4c728f140f3ddef5c21479c3b8cafa9d2ce9fe2831f75ca34156b2355b513</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Discharge</topic><topic>Distribution functions</topic><topic>Electron distribution</topic><topic>Electron energy distribution</topic><topic>Electron states</topic><topic>Low pressure</topic><topic>Oxygen plasma</topic><topic>Plasma physics</topic><topic>Plasmas (physics)</topic><topic>Qualitative analysis</topic><topic>Reaction kinetics</topic><topic>Superelasticity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Pietanza, L. D.</creatorcontrib><creatorcontrib>Colonna, G.</creatorcontrib><creatorcontrib>Capitelli, M.</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physics of plasmas</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Pietanza, L. D.</au><au>Colonna, G.</au><au>Capitelli, M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Extended plateaux in the vibrational and electron distribution functions of O2/O reacting plasmas in discharge and post-discharge conditions</atitle><jtitle>Physics of plasmas</jtitle><date>2020-09</date><risdate>2020</risdate><volume>27</volume><issue>9</issue><issn>1070-664X</issn><eissn>1089-7674</eissn><coden>PHPAEN</coden><abstract>An accurate state to state model describing the plasma kinetics in reacting oxygen plasma has been built up giving particular attention to vibrational–translational O–O2 processes, as well as O–O2(v) dissociation and recombination, direct electron impact dissociation, and resonant electron–vibration (e–V) processes for O2. Moderate and low pressure situations are investigated for both discharge and post-discharge conditions. In both cases, an important role of three body recombination of O atoms and of multi-quantum e–V processes is observed, the latter being particularly important at low pressure. The interplay of the different processes forms an extended plateaux on the vibrational distribution function (vdf) of O2 in both discharge and post-discharge conditions. A comparison between our calculated vdf and the corresponding experimental and theoretical results of Annusova et al. shows a good qualitative agreement. Declining plateaux are also observed in the electron energy distribution function. In this case, superelastic electronic collisions involving high lying electronic states of the O atom form important maxima over the declining plateau.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/5.0015185</doi><tpages>12</tpages><orcidid>https://orcid.org/0000-0002-4993-4838</orcidid><orcidid>https://orcid.org/0000-0002-9765-0311</orcidid></addata></record> |
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subjects | Discharge Distribution functions Electron distribution Electron energy distribution Electron states Low pressure Oxygen plasma Plasma physics Plasmas (physics) Qualitative analysis Reaction kinetics Superelasticity |
title | Extended plateaux in the vibrational and electron distribution functions of O2/O reacting plasmas in discharge and post-discharge conditions |
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