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Slow positron applications at slow positron facility of institute of materials structure science, KEK
https://repo.qst.go.jp/records/54919
https://repo.qst.go.jp/records/549192ca7be20-506c-4529-a497-11970821d72d
| Item type | 会議発表論文 / Conference Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2018-06-11 | |||||
| タイトル | ||||||
| タイトル | Slow positron applications at slow positron facility of institute of materials structure science, KEK | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_5794 | |||||
| 資源タイプ | conference paper | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
T., Hyodo (KEK)
× T., Hyodo (KEK)× I., Mochizuki (KEK)× Wada, Ken× N., Toge (KEK)× T., Shidara (KEK)× Wada, Ken |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Slow Positron Facility at High Energy Accelerator Research Organization (KEK) is a user dedicated facility with an energy-tunable (0.1 - 35 keV) slow positron beam created by a dedicated ~50 MeV linac. It operates in a short pulse (width 1-12 ns, variable, 5×10^6 e^+/s) and a long pulse (width 1.2 μs, 5x10^7 e^+/s) modes of 50 Hz. High energy positrons from pair creation are moderated by reemission after thermalization in W foils. The reemitted positrons are then electrostatically accelerated to a desired energy up to 35 keV and magnetically transported. A pulse-stretching section (pulse stretcher) is installed in the middle of the beamline. It stretches the slow positron pulse for the experiments where too many positrons annihilating in the sample at the same time has to be avoided. Four experiment stations for TRHEPD (total-reflection high-energy positron diffraction), LEPD (low-energy positron diffraction), Ps– (positronium negative ion), and Ps-TOF (positronium time-of-flight) experiments are connected to the beamline branches, SPF-A3, SPF-A4, SPF-B1 and SPF-B2, respectively. Recent results of these stations are briefly described. |
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| 書誌情報 |
AIP Conference Proceedings 巻 1970, 号 1, p. 040004-1-10, 発行日 2018-06 |
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| 出版者 | ||||||
| 出版者 | AIP Publishing | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1063/1.5040216 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://aip.scitation.org/doi/10.1063/1.5040216 | |||||
