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Mo-coated grating-based beam intensity monitor for 13.9 nm x-ray laser
https://repo.qst.go.jp/records/72808
https://repo.qst.go.jp/records/72808fe3bfc11-4af6-41fd-b904-26423f421a38
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2018-06-04 | |||||
| タイトル | ||||||
| タイトル | Mo-coated grating-based beam intensity monitor for 13.9 nm x-ray laser | |||||
| 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_c94f | |||||
| 資源タイプ | conference object | |||||
| 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 |
今園, 孝志
× 今園, 孝志× 西原弘晃× 浮田龍一× 笹井浩行× 長野哲也× 今園 孝志 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | We report a high-efficiency beam intensity monitoring device for a 13.9 nm Ni-like Ag laser. A gold-coated holographic grating with 1200 lines/mm (Shimadzu, #30-002) was merely overcoated with a 16 nm-thick Mo layer for the sake of the diffraction efficiency improvement. The performance was examined by measurements of absolute diffraction efficiencies with synchrotron radiation, and the improvement effect by Mo coating was confirmed: from 69.5% and 8.7% for the zeroth and first orders, respectively, to 74.6% and 13.0%. In addition, it became clear that a high correlation between the intensities of the zeroth and first diffraction orders of the Mo grating measured with the 13.9 nm x-ray laser (XRL) was obtained, being 0.997. Moreover, we have determined a degree of linear polarization of the XRL beam by soft x-ray polarimetry and have validated the practicality of the Mo grating-based beam intensity monitor. | |||||
| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 13th International Conference on Synchrotron Radiation Instrumentation (SRI2018) | |||||
| 発表年月日 | ||||||
| 日付 | 2018-06-13 | |||||
| 日付タイプ | Issued | |||||
