Research of the Oscillation Start-Up Time in an Extended Interaction Oscillator Driven by a Pseudospark-Sourced Sheet Electron Beam
High current density and high brightness are critical factors for high-power and compact extended interaction oscillators (EIOs) which are operated in the terahertz (THz) waveband. The pseudospark-sourced (PS) sheet electron beam, which combines merits including high current density, a relatively bi...
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| Format: | Article |
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MDPI AG
2022-02-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/11/4/664 |
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| author | Ruibin Peng Hailong Li Yong Yin Xiaotao Xu Qingyun Chen Liangjie Bi Che Xu Bin Wang Xuesong Yuan Ping Zhang Lin Meng |
| author_facet | Ruibin Peng Hailong Li Yong Yin Xiaotao Xu Qingyun Chen Liangjie Bi Che Xu Bin Wang Xuesong Yuan Ping Zhang Lin Meng |
| author_sort | Ruibin Peng |
| collection | DOAJ |
| description | High current density and high brightness are critical factors for high-power and compact extended interaction oscillators (EIOs) which are operated in the terahertz (THz) waveband. The pseudospark-sourced (PS) sheet electron beam, which combines merits including high current density, a relatively big beam cross-section and no requirement for the external focusing magnetic field, is a good choice for application to high-frequency EIO. The pulse generated by the PS electron beam can last around tens of nanoseconds or even less, thus the EIO’s oscillation start-up time (OST) should be short enough. This paper researched how to reduce OST in an EIO driven by the PS sheet electron beam. The authors realized that the OST of EIO was very sensitive to the gap length under the equal period. The distribution of the electric field is optimized by adjusting the length of the gap. The strong electric field strength is conducive to the beam-wave interaction, and the OST is affected by the beam-wave interaction. When the gap length reaches a suitable value, the OST becomes the shortest. The simulation results showed the EIO’s shortest OST was 8 ns and the corresponding peak output power was 2 kW at 0.19 THz, while the current density was 500 A/cm<sup>2</sup>. When current density reached 10,000 A/cm<sup>2</sup>, the shortest OST could even be 1.9 ns. |
| first_indexed | 2024-03-09T22:06:57Z |
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| id | doaj.art-d6a9dbca49ad4d6eb9faf396b3166b10 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-09T22:06:57Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-d6a9dbca49ad4d6eb9faf396b3166b102023-11-23T19:40:59ZengMDPI AGElectronics2079-92922022-02-0111466410.3390/electronics11040664Research of the Oscillation Start-Up Time in an Extended Interaction Oscillator Driven by a Pseudospark-Sourced Sheet Electron BeamRuibin Peng0Hailong Li1Yong Yin2Xiaotao Xu3Qingyun Chen4Liangjie Bi5Che Xu6Bin Wang7Xuesong Yuan8Ping Zhang9Lin Meng10The Terahertz Science and Technology Key Laboratory of Sichuan Province, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaThe Terahertz Science and Technology Key Laboratory of Sichuan Province, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaThe Terahertz Science and Technology Key Laboratory of Sichuan Province, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaThe Terahertz Science and Technology Key Laboratory of Sichuan Province, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaThe Terahertz Science and Technology Key Laboratory of Sichuan Province, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaThe Terahertz Science and Technology Key Laboratory of Sichuan Province, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaThe Terahertz Science and Technology Key Laboratory of Sichuan Province, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaThe Terahertz Science and Technology Key Laboratory of Sichuan Province, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaThe Terahertz Science and Technology Key Laboratory of Sichuan Province, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaThe Terahertz Science and Technology Key Laboratory of Sichuan Province, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaThe Terahertz Science and Technology Key Laboratory of Sichuan Province, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaHigh current density and high brightness are critical factors for high-power and compact extended interaction oscillators (EIOs) which are operated in the terahertz (THz) waveband. The pseudospark-sourced (PS) sheet electron beam, which combines merits including high current density, a relatively big beam cross-section and no requirement for the external focusing magnetic field, is a good choice for application to high-frequency EIO. The pulse generated by the PS electron beam can last around tens of nanoseconds or even less, thus the EIO’s oscillation start-up time (OST) should be short enough. This paper researched how to reduce OST in an EIO driven by the PS sheet electron beam. The authors realized that the OST of EIO was very sensitive to the gap length under the equal period. The distribution of the electric field is optimized by adjusting the length of the gap. The strong electric field strength is conducive to the beam-wave interaction, and the OST is affected by the beam-wave interaction. When the gap length reaches a suitable value, the OST becomes the shortest. The simulation results showed the EIO’s shortest OST was 8 ns and the corresponding peak output power was 2 kW at 0.19 THz, while the current density was 500 A/cm<sup>2</sup>. When current density reached 10,000 A/cm<sup>2</sup>, the shortest OST could even be 1.9 ns.https://www.mdpi.com/2079-9292/11/4/664extended interaction oscillator (EIO)pseudospark-sourced (PS) electron beamoscillation start-up time (OST)gap lengthconductivityefficiency |
| spellingShingle | Ruibin Peng Hailong Li Yong Yin Xiaotao Xu Qingyun Chen Liangjie Bi Che Xu Bin Wang Xuesong Yuan Ping Zhang Lin Meng Research of the Oscillation Start-Up Time in an Extended Interaction Oscillator Driven by a Pseudospark-Sourced Sheet Electron Beam Electronics extended interaction oscillator (EIO) pseudospark-sourced (PS) electron beam oscillation start-up time (OST) gap length conductivity efficiency |
| title | Research of the Oscillation Start-Up Time in an Extended Interaction Oscillator Driven by a Pseudospark-Sourced Sheet Electron Beam |
| title_full | Research of the Oscillation Start-Up Time in an Extended Interaction Oscillator Driven by a Pseudospark-Sourced Sheet Electron Beam |
| title_fullStr | Research of the Oscillation Start-Up Time in an Extended Interaction Oscillator Driven by a Pseudospark-Sourced Sheet Electron Beam |
| title_full_unstemmed | Research of the Oscillation Start-Up Time in an Extended Interaction Oscillator Driven by a Pseudospark-Sourced Sheet Electron Beam |
| title_short | Research of the Oscillation Start-Up Time in an Extended Interaction Oscillator Driven by a Pseudospark-Sourced Sheet Electron Beam |
| title_sort | research of the oscillation start up time in an extended interaction oscillator driven by a pseudospark sourced sheet electron beam |
| topic | extended interaction oscillator (EIO) pseudospark-sourced (PS) electron beam oscillation start-up time (OST) gap length conductivity efficiency |
| url | https://www.mdpi.com/2079-9292/11/4/664 |
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