Variational symplectic particle-in-cell simulation of nonlinear mode conversion from extraordinary waves to Bernstein waves
In this paper, the nonlinear mode conversion of extraordinary waves in nonuniform magnetized plasmas is studied using the variational symplectic particle-in-cell simulation. The accuracy of the nonlinear simulation is guaranteed by the long-term accuracy and conservativeness of the symplectic algori...
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| Veröffentlicht in: | Physics of plasmas 2015-09, Vol.22 (9) |
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| creator | Xiao, Jianyuan Liu, Jian Qin, Hong Yu, Zhi Xiang, Nong |
| description | In this paper, the nonlinear mode conversion of extraordinary waves in nonuniform magnetized plasmas is studied using the variational symplectic particle-in-cell simulation. The accuracy of the nonlinear simulation is guaranteed by the long-term accuracy and conservativeness of the symplectic algorithm. The spectra of the electromagnetic wave, the evolution of the wave reflectivity, the energy deposition profile, and the parameter-dependent properties of radio-frequency waves during the nonlinear mode conversion are investigated. It is illustrated that nonlinear effects significantly modify the physics of the radio-frequency injection in magnetized plasmas. The evolutions of the radio-frequency wave reflectivity and the energy deposition are observed, as well as the self-interaction of the Bernstein waves and mode excitations. Even for waves with small magnitude, nonlinear effects can also become important after continuous wave injections, which are common in the realistic radio-frequency wave heating and current drive experiments. |
| doi_str_mv | 10.1063/1.4930118 |
| format | Article |
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The accuracy of the nonlinear simulation is guaranteed by the long-term accuracy and conservativeness of the symplectic algorithm. The spectra of the electromagnetic wave, the evolution of the wave reflectivity, the energy deposition profile, and the parameter-dependent properties of radio-frequency waves during the nonlinear mode conversion are investigated. It is illustrated that nonlinear effects significantly modify the physics of the radio-frequency injection in magnetized plasmas. The evolutions of the radio-frequency wave reflectivity and the energy deposition are observed, as well as the self-interaction of the Bernstein waves and mode excitations. Even for waves with small magnitude, nonlinear effects can also become important after continuous wave injections, which are common in the realistic radio-frequency wave heating and current drive experiments.</description><identifier>ISSN: 1070-664X</identifier><identifier>EISSN: 1089-7674</identifier><identifier>DOI: 10.1063/1.4930118</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>70 PLASMA PHYSICS AND FUSION TECHNOLOGY ; ACCURACY ; ALGORITHMS ; BERNSTEIN MODE ; Bernstein waves ; Computer simulation ; Continuous radiation ; Conversion ; Deposition ; Electromagnetic radiation ; ENERGY ABSORPTION ; ENERGY LOSSES ; INTERACTIONS ; MODE CONVERSION ; NONLINEAR PROBLEMS ; Particle in cell technique ; Plasma physics ; PLASMA SIMULATION ; PLASMA WAVES ; Plasmas (physics) ; RADIATION HEATING ; Radio frequency ; RADIOWAVE RADIATION ; Reflectance ; REFLECTIVITY ; SPECTRA ; VARIATIONAL METHODS</subject><ispartof>Physics of plasmas, 2015-09, Vol.22 (9)</ispartof><rights>2015 AIP Publishing LLC.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c320t-baaca0d8d056282a6a5100aa79ea73187cbc25fe7d1b0e5891ebc39dfb534a023</citedby><cites>FETCH-LOGICAL-c320t-baaca0d8d056282a6a5100aa79ea73187cbc25fe7d1b0e5891ebc39dfb534a023</cites><orcidid>0000-0001-7484-401X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,780,784,885,27924,27925</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/22490152$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Xiao, Jianyuan</creatorcontrib><creatorcontrib>Liu, Jian</creatorcontrib><creatorcontrib>Qin, Hong</creatorcontrib><creatorcontrib>Yu, Zhi</creatorcontrib><creatorcontrib>Xiang, Nong</creatorcontrib><title>Variational symplectic particle-in-cell simulation of nonlinear mode conversion from extraordinary waves to Bernstein waves</title><title>Physics of plasmas</title><description>In this paper, the nonlinear mode conversion of extraordinary waves in nonuniform magnetized plasmas is studied using the variational symplectic particle-in-cell simulation. The accuracy of the nonlinear simulation is guaranteed by the long-term accuracy and conservativeness of the symplectic algorithm. The spectra of the electromagnetic wave, the evolution of the wave reflectivity, the energy deposition profile, and the parameter-dependent properties of radio-frequency waves during the nonlinear mode conversion are investigated. It is illustrated that nonlinear effects significantly modify the physics of the radio-frequency injection in magnetized plasmas. The evolutions of the radio-frequency wave reflectivity and the energy deposition are observed, as well as the self-interaction of the Bernstein waves and mode excitations. Even for waves with small magnitude, nonlinear effects can also become important after continuous wave injections, which are common in the realistic radio-frequency wave heating and current drive experiments.</description><subject>70 PLASMA PHYSICS AND FUSION TECHNOLOGY</subject><subject>ACCURACY</subject><subject>ALGORITHMS</subject><subject>BERNSTEIN MODE</subject><subject>Bernstein waves</subject><subject>Computer simulation</subject><subject>Continuous radiation</subject><subject>Conversion</subject><subject>Deposition</subject><subject>Electromagnetic radiation</subject><subject>ENERGY ABSORPTION</subject><subject>ENERGY LOSSES</subject><subject>INTERACTIONS</subject><subject>MODE CONVERSION</subject><subject>NONLINEAR PROBLEMS</subject><subject>Particle in cell technique</subject><subject>Plasma physics</subject><subject>PLASMA SIMULATION</subject><subject>PLASMA WAVES</subject><subject>Plasmas (physics)</subject><subject>RADIATION HEATING</subject><subject>Radio frequency</subject><subject>RADIOWAVE RADIATION</subject><subject>Reflectance</subject><subject>REFLECTIVITY</subject><subject>SPECTRA</subject><subject>VARIATIONAL METHODS</subject><issn>1070-664X</issn><issn>1089-7674</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNpNkU1LAzEQhoMoWKsH_0HAk4etk-z3UYtfIHhR8RZms7OYspvUJK0W_7xb24Ond5j3YZiZl7FzATMBRXolZlmdghDVAZsIqOqkLMrscFuXkBRF9n7MTkJYAEBW5NWE_byhNxiNs9jzsBmWPeloNF-iH6WnxNhEUz96Zlj1fyB3HbfO9sYSej64lrh2dk0-bM3Ou4HTd_TofGss-g3_wjUFHh2_IW9DJGN3rVN21GEf6GyvU_Z6d_syf0ienu8f59dPiU4lxKRB1Aht1UJeyEpigbkAQCxrwjIVVakbLfOOylY0QHlVC2p0Wrddk6cZgkyn7GI314VoVNAmkv4YV7bjqUrKrAaR_6OW3n2uKES1cCs_viUoKWQGI1XBSF3uKO1dCJ46tfRmGK9UAtQ2ASXUPoH0Fx-Iers</recordid><startdate>20150901</startdate><enddate>20150901</enddate><creator>Xiao, Jianyuan</creator><creator>Liu, Jian</creator><creator>Qin, Hong</creator><creator>Yu, Zhi</creator><creator>Xiang, Nong</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000-0001-7484-401X</orcidid></search><sort><creationdate>20150901</creationdate><title>Variational symplectic particle-in-cell simulation of nonlinear mode conversion from extraordinary waves to Bernstein waves</title><author>Xiao, Jianyuan ; Liu, Jian ; Qin, Hong ; Yu, Zhi ; Xiang, Nong</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c320t-baaca0d8d056282a6a5100aa79ea73187cbc25fe7d1b0e5891ebc39dfb534a023</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>70 PLASMA PHYSICS AND FUSION TECHNOLOGY</topic><topic>ACCURACY</topic><topic>ALGORITHMS</topic><topic>BERNSTEIN MODE</topic><topic>Bernstein waves</topic><topic>Computer simulation</topic><topic>Continuous radiation</topic><topic>Conversion</topic><topic>Deposition</topic><topic>Electromagnetic radiation</topic><topic>ENERGY ABSORPTION</topic><topic>ENERGY LOSSES</topic><topic>INTERACTIONS</topic><topic>MODE CONVERSION</topic><topic>NONLINEAR PROBLEMS</topic><topic>Particle in cell technique</topic><topic>Plasma physics</topic><topic>PLASMA SIMULATION</topic><topic>PLASMA WAVES</topic><topic>Plasmas (physics)</topic><topic>RADIATION HEATING</topic><topic>Radio frequency</topic><topic>RADIOWAVE RADIATION</topic><topic>Reflectance</topic><topic>REFLECTIVITY</topic><topic>SPECTRA</topic><topic>VARIATIONAL METHODS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Xiao, Jianyuan</creatorcontrib><creatorcontrib>Liu, Jian</creatorcontrib><creatorcontrib>Qin, Hong</creatorcontrib><creatorcontrib>Yu, Zhi</creatorcontrib><creatorcontrib>Xiang, Nong</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>Physics of plasmas</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Xiao, Jianyuan</au><au>Liu, Jian</au><au>Qin, Hong</au><au>Yu, Zhi</au><au>Xiang, Nong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Variational symplectic particle-in-cell simulation of nonlinear mode conversion from extraordinary waves to Bernstein waves</atitle><jtitle>Physics of plasmas</jtitle><date>2015-09-01</date><risdate>2015</risdate><volume>22</volume><issue>9</issue><issn>1070-664X</issn><eissn>1089-7674</eissn><abstract>In this paper, the nonlinear mode conversion of extraordinary waves in nonuniform magnetized plasmas is studied using the variational symplectic particle-in-cell simulation. The accuracy of the nonlinear simulation is guaranteed by the long-term accuracy and conservativeness of the symplectic algorithm. The spectra of the electromagnetic wave, the evolution of the wave reflectivity, the energy deposition profile, and the parameter-dependent properties of radio-frequency waves during the nonlinear mode conversion are investigated. It is illustrated that nonlinear effects significantly modify the physics of the radio-frequency injection in magnetized plasmas. The evolutions of the radio-frequency wave reflectivity and the energy deposition are observed, as well as the self-interaction of the Bernstein waves and mode excitations. Even for waves with small magnitude, nonlinear effects can also become important after continuous wave injections, which are common in the realistic radio-frequency wave heating and current drive experiments.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.4930118</doi><orcidid>https://orcid.org/0000-0001-7484-401X</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | 70 PLASMA PHYSICS AND FUSION TECHNOLOGY ACCURACY ALGORITHMS BERNSTEIN MODE Bernstein waves Computer simulation Continuous radiation Conversion Deposition Electromagnetic radiation ENERGY ABSORPTION ENERGY LOSSES INTERACTIONS MODE CONVERSION NONLINEAR PROBLEMS Particle in cell technique Plasma physics PLASMA SIMULATION PLASMA WAVES Plasmas (physics) RADIATION HEATING Radio frequency RADIOWAVE RADIATION Reflectance REFLECTIVITY SPECTRA VARIATIONAL METHODS |
| title | Variational symplectic particle-in-cell simulation of nonlinear mode conversion from extraordinary waves to Bernstein waves |
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