Comparative Analysis of Simplified and Extended Chemistry Models in Low-Pressure Argon DC Discharge

Comparative Analysis of Simplified and Extended Chemistry Models in Low-Pressure Argon DC Discharge | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Comparative Analysis of Simplified and Extended Chemistry Models in Low-Pressure Argon DC Discharge Kurban M Rabadanov, Gadzhi Sh Shakhsinov This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-9184005/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract In the present work, a comparative study of the influence of plasma-chemical reactions on the results of fluid modeling of a direct current (DC) glow discharge in argon at a pressure of 1 Torr is presented. Here two approaches are compared: a Simplified Chemistry Model (SCM), which accounts for only one lumped excited level, and an Extended Chemistry Model (ECM), in which metastable and resonance states are explicitly separated, and resonance radiation transport is taken into account. The use of SCM leads to an overestimation of plasma density (by a factor of 2-3) and discharge current (by ~23%) compared to the more detailed ECM. It is shown that neglecting radiative losses from resonance levels in simplified models violates the energy and particle balance, leading to inaccurate predictions even at low pressures. Analysis of ionization rates demonstrates that the simplified model artificially overestimates the contribution of stepwise ionization. The results demonstrate the necessity of accounting for the detailed structure of excited levels for quantitatively accurate modeling of gas discharge devices even at low pressures. Gas-discharge direct current discharge argon plasma low-pressure plasma numerical simulation Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-9184005","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":618826461,"identity":"7146c2ad-daa7-403b-8818-31aa3e5b313a","order_by":0,"name":"Kurban M Rabadanov","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA+klEQVRIiWNgGAWjYBACCQYGNiB1AML7YGDDwMDM3EC8FsYZBWlALYwkaGHm+XAYpBO/FskZuc8e/NxxR17e/XTiZx6D89H87YwNzJVtuLVIS6SbG/aeeWa48UzuZsk5BrdzZxxmbGA8i0eLnEQamwRv22HGjQ25GyTeALU0gLQ0EtAi+bftsP3G/rebf/AYnMudT0iLNFCLNNCWxPkSudskeQwO5G4gpEWy5xm7sWzbs+QNEm+3Wc4wSM7dCNRysOEcbi0Sx9PYHr5tu2M7vz93840Pf+xy550/fPBhQxluLXBgcACJcwCHIlQg30CUslEwCkbBKBiJAADwdlsaIWoqGAAAAABJRU5ErkJggg==","orcid":"","institution":"Harbin Institute of Technology","correspondingAuthor":true,"prefix":"","firstName":"Kurban","middleName":"M","lastName":"Rabadanov","suffix":""},{"id":618826462,"identity":"6f9df0c4-f589-44e4-a4f2-e9a5442cf72f","order_by":1,"name":"Gadzhi Sh Shakhsinov","email":"","orcid":"","institution":"Dagestan State University","correspondingAuthor":false,"prefix":"","firstName":"Gadzhi","middleName":"Sh","lastName":"Shakhsinov","suffix":""}],"badges":[],"createdAt":"2026-03-21 07:25:30","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-9184005/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-9184005/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":108491196,"identity":"c8b29d9a-59a0-4ffd-be32-3178469fe15a","added_by":"auto","created_at":"2026-05-05 09:52:50","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":522952,"visible":true,"origin":"","legend":"","description":"","filename":"Articleforsubmitwithremarks.pdf","url":"https://assets-eu.researchsquare.com/files/rs-9184005/v1_covered_8fc9eee6-e753-4dd0-bd2f-0d07ee6dc2b8.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Comparative Analysis of Simplified and Extended Chemistry Models in Low-Pressure Argon DC Discharge","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"Gas-discharge, direct current discharge, argon plasma, low-pressure plasma, numerical simulation","lastPublishedDoi":"10.21203/rs.3.rs-9184005/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-9184005/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"In the present work, a comparative study of the influence of plasma-chemical reactions on the results of fluid modeling of a direct current (DC) glow discharge in argon at a pressure of 1 Torr is presented. 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