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DC Field | Value | Language |
---|---|---|
dc.citation.number | 3 | - |
dc.citation.startPage | 033102 | - |
dc.citation.title | PHYSICS OF PLASMAS | - |
dc.citation.volume | 29 | - |
dc.contributor.author | Kumar, Manoj | - |
dc.contributor.author | Kang, Teyoun | - |
dc.contributor.author | Song, Hyung Seon | - |
dc.contributor.author | Hur, Min Sup | - |
dc.date.accessioned | 2023-12-21T14:22:56Z | - |
dc.date.available | 2023-12-21T14:22:56Z | - |
dc.date.created | 2022-04-28 | - |
dc.date.issued | 2022-03 | - |
dc.description.abstract | We studied the THz radiation generated by a beam-plasma system using two-dimensional (2D) particle-in-cell (PIC) simulations. The Langmuir waves excited by two counterpropagating electron beams, via two-stream instability, collide with each other at an oblique angle, which forms a high beam-density modulation near the collision region, where both beam electrons become trapped. As a result, spatially localized Langmuir wave packets with large longitudinal-electric field amplitudes are formed, which give rise to bursts of electromagnetic radiation. Our 2D PIC simulations of the two thin, low-density, asymmetric, electron beams colliding obliquely show that a strong THz emission is obtained at the second harmonic of the plasma frequency (f = 1.0 THz), with a narrow spectral width (& SIM;0.80%) in vacuum and significantly higher efficiency than the head-on-collision case. The efficiency of power conversion from electron beams to THz radiation measured in vacuum reaches around & SIM;0.0289, for a continuous injection of beams into the plasma, making it suitable for applications requiring high-power narrow-band THz radiation sources.& nbsp;Published under an exclusive license by AIP Publishing. | - |
dc.identifier.bibliographicCitation | PHYSICS OF PLASMAS, v.29, no.3, pp.033102 | - |
dc.identifier.doi | 10.1063/5.0073570 | - |
dc.identifier.issn | 1070-664X | - |
dc.identifier.scopusid | 2-s2.0-85126137287 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/58385 | - |
dc.identifier.url | https://aip.scitation.org/doi/10.1063/5.0073570 | - |
dc.identifier.wosid | 000774327900009 | - |
dc.language | 영어 | - |
dc.publisher | AMER INST PHYSICS | - |
dc.title | Particle-in-cell simulations of THz emission from plasma by oblique collision of two-electron beams | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Physics, Fluids & Plasmas | - |
dc.relation.journalResearchArea | Physics | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | TERAHERTZ RADIATION | - |
dc.subject.keywordPlus | ELECTRON-BEAM | - |
dc.subject.keywordPlus | CHARGE CONSERVATION | - |
dc.subject.keywordPlus | GENERATION | - |
dc.subject.keywordPlus | PULSES | - |
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