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DC Field | Value | Language |
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dc.citation.number | 1 | - |
dc.citation.startPage | 015603 | - |
dc.citation.title | PHYSICA SCRIPTA | - |
dc.citation.volume | 99 | - |
dc.contributor.author | Nam, Inhyuk | - |
dc.contributor.author | Kim, Minseok | - |
dc.contributor.author | Cho, Myung Hoon | - |
dc.contributor.author | Jang, Dogeun | - |
dc.contributor.author | Hur, Min Sup | - |
dc.contributor.author | Suk, Hyyong | - |
dc.date.accessioned | 2024-01-30T14:05:17Z | - |
dc.date.available | 2024-01-30T14:05:17Z | - |
dc.date.created | 2024-01-16 | - |
dc.date.issued | 2024-01 | - |
dc.description.abstract | In the laser wakefield acceleration (LWFA), the dephasing problem is a serious energy-limiting factor, which is caused by the velocity difference between the accelerated electrons and the laser wake wave. To overcome the dephasing problem, we developed a special capillary gas-cell with a density up-ramp along the laser propagation direction and used it for electron acceleration experiments. Our experiments, which were performed with a peak laser power of 15 TW at GIST, show that the electron beam energy was enhanced to 260 MeV compared with 98 MeV from a flat density profile, which is more than two fold by the density up-ramp due to the increase of the dephasing length in the density up-ramp. This is the first experimental demonstration for electron energy enhancement using the density up-ramp in a capillary gas-cell. Two-dimensional particle-in-cell (PIC) simulations were also performed to confirm the effect of the density up-ramp, which shows a good agreement with the experimental results. Compared with a gas jet, the capillary gas-cell can provide a more stable and longer plasma so that the density up-ramp method in the capillary gas-cell may produce high quality electron beams of energy up to GeV range. | - |
dc.identifier.bibliographicCitation | PHYSICA SCRIPTA, v.99, no.1, pp.015603 | - |
dc.identifier.doi | 10.1088/1402-4896/ad1452 | - |
dc.identifier.issn | 0031-8949 | - |
dc.identifier.scopusid | 2-s2.0-85180528117 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/74401 | - |
dc.identifier.wosid | 001128402800001 | - |
dc.language | 영어 | - |
dc.publisher | IOP Publishing Ltd | - |
dc.title | Enhancement of electron energies in the laser wakefield acceleration using a density up-ramp capillary gas-cell | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Physics, Multidisciplinary | - |
dc.relation.journalResearchArea | Physics | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | laser wakefield acceleration | - |
dc.subject.keywordAuthor | capillary gas-cell | - |
dc.subject.keywordAuthor | PIC simulation | - |
dc.subject.keywordAuthor | plasma density up-ramp | - |
dc.subject.keywordPlus | BEAMS | - |
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