WEKO3
アイテム
Design and experimental evaluation of enhanced diffraction efficiency of lanthanum-based material coated laminar-type gratings in boron K-emission region
https://repo.qst.go.jp/records/81353
https://repo.qst.go.jp/records/81353aed440c8-9634-4fba-bb25-e75d075a4b9b
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2020-12-18 | |||||
| タイトル | ||||||
| タイトル | Design and experimental evaluation of enhanced diffraction efficiency of lanthanum-based material coated laminar-type gratings in boron K-emission region | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| 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× ピロジコフ, アレキサンダー× 林, 信和× 笹井, 浩行× 長野, 哲也× Masato, Koike× Pirozhkov, Alexander |
|||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Numerical approach and experimental studies have been performed to evaluate the enhancement of diffraction efficiency of diffraction gratings by overcoating with lanthanum series layers on conventional metal coated laminar-type gratings around B K-emission (183 eV, 6.76 nm). We propose an optical design method with a concept of spectral flux given by collection efficiency and diffraction efficiency. A diffraction grating of small angle of incidence gives an advantage to soft X-ray spectrographs because it collects the emission from the point source in larger solid angle compared to the conventional grazing incidence diffraction gratings. We found that La, La2O3, and LaF3 were promising as overcoating materials on a laminar-type Ni-coated diffraction grating as the results of numerical calculation, and performed experimental study using LaF3 and La/C overcoatings, considering producibility and durability. Diffraction efficiencies of gratings coated with Ni/LaF3 and Ni/La/C were measured by use of a reflectometer at a synchrotron facility. As the results, the observed diffraction efficiencies at 183.4 eV were 29.4 % and 34.3% at the angles of incidence of 85.1° and 84.9° for Ni/LaF3 and Ni/La/C gratings, respectively. | |||||
| 書誌情報 |
Applied Optics 巻 60, 号 16, p. 4993-4999, 発行日 2021-06 |
|||||
| 出版者 | ||||||
| 出版者 | Optical Society of America | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1559-128X | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1364/AO.430802 | |||||
| 関連サイト | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1364/AO.430802 | |||||
