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DC Field | Value | Language |
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dc.citation.endPage | 401 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 397 | - |
dc.citation.title | JOURNAL OF THE KOREAN PHYSICAL SOCIETY | - |
dc.citation.volume | 51 | - |
dc.contributor.author | Kim, J. | - |
dc.contributor.author | Jang, H. | - |
dc.contributor.author | Yoo, S. | - |
dc.contributor.author | Hur, Min Sup | - |
dc.contributor.author | Hwang, I. | - |
dc.contributor.author | Lim, J. | - |
dc.contributor.author | Kulagin, V. | - |
dc.contributor.author | Suk, H. | - |
dc.contributor.author | Choi, I. W. | - |
dc.contributor.author | Hafz, N. | - |
dc.contributor.author | Kim, H. T. | - |
dc.contributor.author | Hong, K.-H. | - |
dc.contributor.author | Yu, T. J. | - |
dc.contributor.author | Sung, J. H. | - |
dc.contributor.author | Jeong, T. M. | - |
dc.contributor.author | Noh, Y.-C. | - |
dc.contributor.author | Ko, D.-K. | - |
dc.contributor.author | Lee, J. | - |
dc.date.accessioned | 2023-12-22T09:12:19Z | - |
dc.date.available | 2023-12-22T09:12:19Z | - |
dc.date.created | 2014-11-12 | - |
dc.date.issued | 2007-07 | - |
dc.description.abstract | Two types of electron acceleration methods have been conducted to generate quasi-monoenergetic electron beams. Multi-MeV quasi-monoenergetic high-charge electron beams were generated at Korea Electrotechnology Research Institute (KERI) from self-modulated laser wakefield acceleration by using a collimator with a 2 TW (1.4 J/700 fs) Nd:glass/Ti:sapphire hybrid laser system and a supersonic nitrogen gas jet. The peak electron energy was 3.6 MeV, and the energy spread was 4 MeV. These electron beams are useful for the generation of short-pulse X-rays in the water window region, which is 250 eV - 500 eV (2.5 - 5 nm), by using Thomson scattering. The calcualted photon spectrum indicates the scattered photon covers the water window region. This can be used for a high spatial and temperal resolution microscope for medical imaing. To generate higher-energy electron beams with small energy spread, a laser wakefield acceleration experiment with a sharp downward electron density gradient was conducted with a 100 TW laser system at Advanced Photon Research Insistitute (APRI). With the electron density gradient, some background plasma electrons could be locally injected in the laser wake wave and a small energy spread was expected. Using the pre-pulse, we could generate sharp downward electron density gradients. The gradient scale length was 20 μm for a 25 % density change. With this electron density gradient, we could get more reproducible electron beams than we could without the density gradient. | - |
dc.identifier.bibliographicCitation | JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.51, no.1, pp.397 - 401 | - |
dc.identifier.issn | 0374-4884 | - |
dc.identifier.scopusid | 2-s2.0-34547773571 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/8766 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=34547773571 | - |
dc.identifier.wosid | 000248063000021 | - |
dc.language | 영어 | - |
dc.publisher | KOREAN PHYSICAL SOC | - |
dc.title | Quasi-monoenergetic electron-beam generation using a laser accelerator for ultra-short X-ray sources | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | laser wakefield accelerator | - |
dc.subject.keywordAuthor | X-ray generation | - |
dc.subject.keywordAuthor | Thomson scattering | - |
dc.subject.keywordPlus | THOMSON SCATTERING | - |
dc.subject.keywordPlus | PLASMA INTERACTIONS | - |
dc.subject.keywordPlus | DIFFRACTION | - |
dc.subject.keywordPlus | PULSES | - |
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