An alternative form of the fundamental plasma emission through the coalescence of Z-mode waves with whistlers
Plasma emission (PE), i.e., electromagnetic radiation at the plasma frequency and its second harmonic, is a general process occurring in both astrophysical and laboratory plasmas. The prevailing theory presents a multi-stage process attributed to the resonant coupling of beam-excited Langmuir waves...
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Veröffentlicht in: | Physics of plasmas 2021-04, Vol.28 (4) |
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creator | Ni, Sulan Chen, Yao Li, Chuanyang Sun, Jicheng Ning, Hao Zhang, Zilong |
description | Plasma emission (PE), i.e., electromagnetic radiation at the plasma frequency and its second harmonic, is a general process occurring in both astrophysical and laboratory plasmas. The prevailing theory presents a multi-stage process attributed to the resonant coupling of beam-excited Langmuir waves with ion-acoustic waves. Here, we examine another possibility of the fundamental PE induced by the resonant coupling of Z-mode and whistler (W) waves. Earlier studies have been controversial in the plausibility and significance of such process in plasmas. In this study, we show that the matching condition of three-wave resonant interaction (Z + W → O) can be satisfied over a wide regime of parameters based on the magnetoionic theory, demonstrate the occurrence of such process, and further evaluate the rate of energy conversion from the pumped Z or W mode to the fundamental O mode with particle-in-cell simulations of wave pumping. The study presents an alternative form of the fundamental PE, which could possibly play a role in various astrophysical and laboratory scenarios with both Z and W modes readily excited through the electron cyclotron maser instability. |
doi_str_mv | 10.1063/5.0045546 |
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The prevailing theory presents a multi-stage process attributed to the resonant coupling of beam-excited Langmuir waves with ion-acoustic waves. Here, we examine another possibility of the fundamental PE induced by the resonant coupling of Z-mode and whistler (W) waves. Earlier studies have been controversial in the plausibility and significance of such process in plasmas. In this study, we show that the matching condition of three-wave resonant interaction (Z + W → O) can be satisfied over a wide regime of parameters based on the magnetoionic theory, demonstrate the occurrence of such process, and further evaluate the rate of energy conversion from the pumped Z or W mode to the fundamental O mode with particle-in-cell simulations of wave pumping. The study presents an alternative form of the fundamental PE, which could possibly play a role in various astrophysical and laboratory scenarios with both Z and W modes readily excited through the electron cyclotron maser instability.</description><identifier>ISSN: 1070-664X</identifier><identifier>EISSN: 1089-7674</identifier><identifier>DOI: 10.1063/5.0045546</identifier><identifier>CODEN: PHPAEN</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Acoustic waves ; Coalescing ; Coupling ; Cyclotrons ; Electromagnetic radiation ; Emission ; Energy conversion ; Laboratories ; Langmuir waves ; Particle in cell technique ; Plasma frequencies ; Plasmas (physics) ; Resonant interactions ; Whistlers</subject><ispartof>Physics of plasmas, 2021-04, Vol.28 (4)</ispartof><rights>Author(s)</rights><rights>2021 Author(s). 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The study presents an alternative form of the fundamental PE, which could possibly play a role in various astrophysical and laboratory scenarios with both Z and W modes readily excited through the electron cyclotron maser instability.</description><subject>Acoustic waves</subject><subject>Coalescing</subject><subject>Coupling</subject><subject>Cyclotrons</subject><subject>Electromagnetic radiation</subject><subject>Emission</subject><subject>Energy conversion</subject><subject>Laboratories</subject><subject>Langmuir waves</subject><subject>Particle in cell technique</subject><subject>Plasma frequencies</subject><subject>Plasmas (physics)</subject><subject>Resonant interactions</subject><subject>Whistlers</subject><issn>1070-664X</issn><issn>1089-7674</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp90E1LxDAQBuAgCq6rB_9BwJNC16Rpkva4iF-w4EVBvIRpktoubbMm6S7-e7vuogfB0wzMMwPzInROyYwSwa75jJCM80wcoAkleZFIIbPDbS9JIkT2eoxOQliSUQmeT1A37zG00foeYrO2uHK-w67CsR77oTfQ2T5Ci1cthA6w7ZoQGtePc--G9_rbaQetDdr22m5X35LOGYs3sLYBb5pY403dhNhaH07RUQVtsGf7OkUvd7fPNw_J4un-8Wa-SDRLZUzy1EgjqRQ5WBAlMWllmOGmlIYxmkORF5SaMs1AZlqnZVpYwVkGlHOgIpdsii52d1fefQw2RLV0w_hiG1TKKWecFYSO6nKntHcheFuplW868J-KErVNU3G1T3O0VzsbdBPHqFz_g9fO_0K1MtV_-O_lL9yAg-4</recordid><startdate>202104</startdate><enddate>202104</enddate><creator>Ni, Sulan</creator><creator>Chen, Yao</creator><creator>Li, Chuanyang</creator><creator>Sun, Jicheng</creator><creator>Ning, Hao</creator><creator>Zhang, Zilong</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/0000-0002-5059-5394</orcidid><orcidid>https://orcid.org/0000-0001-9361-886X</orcidid><orcidid>https://orcid.org/0000-0001-9707-584X</orcidid><orcidid>https://orcid.org/0000-0001-8132-5357</orcidid><orcidid>https://orcid.org/0000-0002-2873-0860</orcidid><orcidid>https://orcid.org/0000-0001-6449-8838</orcidid></search><sort><creationdate>202104</creationdate><title>An alternative form of the fundamental plasma emission through the coalescence of Z-mode waves with whistlers</title><author>Ni, Sulan ; Chen, Yao ; Li, Chuanyang ; Sun, Jicheng ; Ning, Hao ; Zhang, Zilong</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c327t-82d7d71768aea6b0d2fd3d5db7d3318a98911db24a74cc2b29e6534a155a16873</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Acoustic waves</topic><topic>Coalescing</topic><topic>Coupling</topic><topic>Cyclotrons</topic><topic>Electromagnetic radiation</topic><topic>Emission</topic><topic>Energy conversion</topic><topic>Laboratories</topic><topic>Langmuir waves</topic><topic>Particle in cell technique</topic><topic>Plasma frequencies</topic><topic>Plasmas (physics)</topic><topic>Resonant interactions</topic><topic>Whistlers</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ni, Sulan</creatorcontrib><creatorcontrib>Chen, Yao</creatorcontrib><creatorcontrib>Li, Chuanyang</creatorcontrib><creatorcontrib>Sun, Jicheng</creatorcontrib><creatorcontrib>Ning, Hao</creatorcontrib><creatorcontrib>Zhang, Zilong</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>Ni, Sulan</au><au>Chen, Yao</au><au>Li, Chuanyang</au><au>Sun, Jicheng</au><au>Ning, Hao</au><au>Zhang, Zilong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>An alternative form of the fundamental plasma emission through the coalescence of Z-mode waves with whistlers</atitle><jtitle>Physics of plasmas</jtitle><date>2021-04</date><risdate>2021</risdate><volume>28</volume><issue>4</issue><issn>1070-664X</issn><eissn>1089-7674</eissn><coden>PHPAEN</coden><abstract>Plasma emission (PE), i.e., electromagnetic radiation at the plasma frequency and its second harmonic, is a general process occurring in both astrophysical and laboratory plasmas. 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subjects | Acoustic waves Coalescing Coupling Cyclotrons Electromagnetic radiation Emission Energy conversion Laboratories Langmuir waves Particle in cell technique Plasma frequencies Plasmas (physics) Resonant interactions Whistlers |
title | An alternative form of the fundamental plasma emission through the coalescence of Z-mode waves with whistlers |
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