Starting behaviors of the TM-mode gyrotrons
This work shows the derivations and calculations of the starting behaviors using the Laplace method and the numerical method. Calculated results based on these two methods agree well when dealing with a uniform structure, while the numerical method is advantageous for the non-uniform and practical s...
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description | This work shows the derivations and calculations of the starting behaviors using the Laplace method and the numerical method. Calculated results based on these two methods agree well when dealing with a uniform structure, while the numerical method is advantageous for the non-uniform and practical structure. The applicability of the zero-field and the outgoing-wave boundary conditions at the collector end is discussed. These two boundary conditions agree well when the beam-wave resonant line and the waveguide dispersion curve intercept at the backward-wave region but differ significantly at the forward-wave region. The beam-wave coupling strength of the TM-mode gyrotron is found to be strongly correlated with the starting current, which can be utilized to avoid the potential competition from the transverse electric (TE) modes. The starting current of the TM11 gyrotron exhibits an additional operating condition at the low-beam voltage that may facilitate the development of low-cost and tabletop gyrotron systems. The beam-voltage and magnetic-field tunings are investigated for an open-cavity structure with the numerical method. Interestingly, the TM11 gyrotron as well as the TE01 gyrotron exhibits a similar starting behavior, which warrants the potential applications of the TM-mode gyrotrons. |
doi_str_mv | 10.1063/1.5134725 |
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Calculated results based on these two methods agree well when dealing with a uniform structure, while the numerical method is advantageous for the non-uniform and practical structure. The applicability of the zero-field and the outgoing-wave boundary conditions at the collector end is discussed. These two boundary conditions agree well when the beam-wave resonant line and the waveguide dispersion curve intercept at the backward-wave region but differ significantly at the forward-wave region. The beam-wave coupling strength of the TM-mode gyrotron is found to be strongly correlated with the starting current, which can be utilized to avoid the potential competition from the transverse electric (TE) modes. The starting current of the TM11 gyrotron exhibits an additional operating condition at the low-beam voltage that may facilitate the development of low-cost and tabletop gyrotron systems. The beam-voltage and magnetic-field tunings are investigated for an open-cavity structure with the numerical method. Interestingly, the TM11 gyrotron as well as the TE01 gyrotron exhibits a similar starting behavior, which warrants the potential applications of the TM-mode gyrotrons.</description><identifier>ISSN: 1070-664X</identifier><identifier>EISSN: 1089-7674</identifier><identifier>DOI: 10.1063/1.5134725</identifier><identifier>CODEN: PHPAEN</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Boundary conditions ; Cyclotron resonance devices ; Dispersion curve analysis ; Electric potential ; Mathematical analysis ; Numerical analysis ; Numerical methods ; Plasma ; Plasma physics ; Voltage</subject><ispartof>Physics of plasmas, 2020-02, Vol.27 (2)</ispartof><rights>Author(s)</rights><rights>2020 Author(s). 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Calculated results based on these two methods agree well when dealing with a uniform structure, while the numerical method is advantageous for the non-uniform and practical structure. The applicability of the zero-field and the outgoing-wave boundary conditions at the collector end is discussed. These two boundary conditions agree well when the beam-wave resonant line and the waveguide dispersion curve intercept at the backward-wave region but differ significantly at the forward-wave region. The beam-wave coupling strength of the TM-mode gyrotron is found to be strongly correlated with the starting current, which can be utilized to avoid the potential competition from the transverse electric (TE) modes. The starting current of the TM11 gyrotron exhibits an additional operating condition at the low-beam voltage that may facilitate the development of low-cost and tabletop gyrotron systems. The beam-voltage and magnetic-field tunings are investigated for an open-cavity structure with the numerical method. Interestingly, the TM11 gyrotron as well as the TE01 gyrotron exhibits a similar starting behavior, which warrants the potential applications of the TM-mode gyrotrons.</description><subject>Boundary conditions</subject><subject>Cyclotron resonance devices</subject><subject>Dispersion curve analysis</subject><subject>Electric potential</subject><subject>Mathematical analysis</subject><subject>Numerical analysis</subject><subject>Numerical methods</subject><subject>Plasma</subject><subject>Plasma physics</subject><subject>Voltage</subject><issn>1070-664X</issn><issn>1089-7674</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNp90E1LAzEQBuAgCtbqwX-w4Ell6-R79yilfkDFgxW8hWySbbfYTU3SQv-9W7boQfA0c3jmHXgRusQwwiDoHR5xTJkk_AgNMBRlLoVkx_tdQi4E-zhFZzEuAYAJXgzQ7VvSITXtPKvcQm8bH2Lm6ywtXDZ7yVfeumy-Cz4F38ZzdFLrz-guDnOI3h8ms_FTPn19fB7fT3NDiUw5ZbUkBbZlzZ02EgizWgIDqKiopKwKAMGtwwwbQUqqjZVlYQ2XloCmtqBDdNXnroP_2riY1NJvQtu9VITy7pyVAJ267pUJPsbgarUOzUqHncKg9l0orA5ddPamt9E0SafGtz9468MvVGtb_4f_Jn8Dhi5qsA</recordid><startdate>202002</startdate><enddate>202002</enddate><creator>Yao, Hsin-Yu</creator><creator>Chen, Chih-Chieh</creator><creator>Chang, Tsun-Hsu</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/0000-0003-2501-3185</orcidid></search><sort><creationdate>202002</creationdate><title>Starting behaviors of the TM-mode gyrotrons</title><author>Yao, Hsin-Yu ; Chen, Chih-Chieh ; Chang, Tsun-Hsu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c327t-34f7281d9f5eac7024da70400b36b77b80065de141c6293acd798dc57d20a3d83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Boundary conditions</topic><topic>Cyclotron resonance devices</topic><topic>Dispersion curve analysis</topic><topic>Electric potential</topic><topic>Mathematical analysis</topic><topic>Numerical analysis</topic><topic>Numerical methods</topic><topic>Plasma</topic><topic>Plasma physics</topic><topic>Voltage</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yao, Hsin-Yu</creatorcontrib><creatorcontrib>Chen, Chih-Chieh</creatorcontrib><creatorcontrib>Chang, Tsun-Hsu</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>Yao, Hsin-Yu</au><au>Chen, Chih-Chieh</au><au>Chang, Tsun-Hsu</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Starting behaviors of the TM-mode gyrotrons</atitle><jtitle>Physics of plasmas</jtitle><date>2020-02</date><risdate>2020</risdate><volume>27</volume><issue>2</issue><issn>1070-664X</issn><eissn>1089-7674</eissn><coden>PHPAEN</coden><abstract>This work shows the derivations and calculations of the starting behaviors using the Laplace method and the numerical method. Calculated results based on these two methods agree well when dealing with a uniform structure, while the numerical method is advantageous for the non-uniform and practical structure. The applicability of the zero-field and the outgoing-wave boundary conditions at the collector end is discussed. These two boundary conditions agree well when the beam-wave resonant line and the waveguide dispersion curve intercept at the backward-wave region but differ significantly at the forward-wave region. The beam-wave coupling strength of the TM-mode gyrotron is found to be strongly correlated with the starting current, which can be utilized to avoid the potential competition from the transverse electric (TE) modes. The starting current of the TM11 gyrotron exhibits an additional operating condition at the low-beam voltage that may facilitate the development of low-cost and tabletop gyrotron systems. The beam-voltage and magnetic-field tunings are investigated for an open-cavity structure with the numerical method. Interestingly, the TM11 gyrotron as well as the TE01 gyrotron exhibits a similar starting behavior, which warrants the potential applications of the TM-mode gyrotrons.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.5134725</doi><tpages>7</tpages><orcidid>https://orcid.org/0000-0003-2501-3185</orcidid></addata></record> |
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subjects | Boundary conditions Cyclotron resonance devices Dispersion curve analysis Electric potential Mathematical analysis Numerical analysis Numerical methods Plasma Plasma physics Voltage |
title | Starting behaviors of the TM-mode gyrotrons |
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