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LaF3- and La/C-coated high efficiency laminar-type diffraction gratings for B K-emission spectroscopy
https://repo.qst.go.jp/records/76901
https://repo.qst.go.jp/records/769019fe5d7a7-5a30-46aa-ba84-33f3e250aa49
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2019-09-24 | |||||
| タイトル | ||||||
| タイトル | LaF3- and La/C-coated high efficiency laminar-type diffraction gratings for B K-emission spectroscopy | |||||
| 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 |
羽多野, 忠
× 羽多野, 忠× 小池, 雅人× 寺内, 正己× Pirozhkov, Alexander× 西原, 弘晃× 笹井, 浩行× 長野, 哲也× Koike, Masato× Pirozhkov, Alexander |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Multilayer coating is an effective method to enhance spectral flux at an interested spectral range. We have initiated feasibility studies to explore the methods to enhance spectral flux essentially by not only increasing diffraction efficiency but also getting rid of a restriction of traditional used incidence angle. In the present study, we assumed the Ni-coated laminar-type gratings having groove density of 1200 lines/mm, and investigated the overcoatings of La series materials. To overcome the issue that the deposited La surface is easily oxidized to smash in air, we employed chemically stable LaF3 and metallic lanthanum with a carbon protective cap layer, La/C. The measured maximum diffraction efficiencies were 0.178, 0.294, and 0.343 at the angles of incidence of α = 84.42°, 85.19°, and 84.83° for the gratings having Ni, Ni/LaF3, and La/C coatings, respectively. The gains of the receivable incidence flux proportional to cosα are 1.9, 1.6, and 1.8 times, and finally the enhancements of diffracted spectral flux are 2.5, 3.5 and 4.4 times compared to that of the Au-coated grating at α = 87.07°, respectively. | |||||
| 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 | The 15th Symposium of Japanese Research Community on X-ray Imaging Optics | |||||
| 発表年月日 | ||||||
| 日付 | 2019-10-25 | |||||
| 日付タイプ | Issued | |||||
