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Anomalous enhancement of water window X-rays emitted from laser produced Au plasma under low-pressure nitrogen atmosphere
https://repo.qst.go.jp/records/66965
https://repo.qst.go.jp/records/66965c5b3fc86-e113-4049-8e3f-fbbfde5520bf
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2018-11-07 | |||||
| タイトル | ||||||
| タイトル | Anomalous enhancement of water window X-rays emitted from laser produced Au plasma under low-pressure nitrogen atmosphere | |||||
| 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 |
Namba, S.
× Namba, S.× 岸本, 牧× John C.× Kakunaka, N.× Matsumoto, Y.× 長谷川, 登× 錦野, 将元× Higashiguchi, T.× Ejima, T.× Sunahara, A.× Johzaki, T.× 岸本 牧× 長谷川 登× 錦野 将元 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Water window (WW) soft X-ray (wavelength: 2.3-4.4 nm) is a suitable light source for observing nanometer-size structure of living cells and bio-molecules. Although laser produced plasma has been expected as a bright and short pulse X-ray source, the conversion efficiency from driving laser pulse energy to WW radiation is far below 1%, which hinders the realization of a compact and low-cost X-ray microscope. Recently, it was found that the WW radiation increased, when an Au target was irradiated by the GEKKO XII laser (1053 nm, 500 ps, 120 J) under low-pressure nitrogen atmospheres up to 400 Pa. However, the fact that the laser facility is huge and its repetition rate is very low makes it impossible to apply this X-ray source to the microscope. In order to realize the practical microscope capable of reducing size and cost, The bright X rays generated with a joule class pulsed laser with a high repetition rate is essential. Therefore, under N2 atmospheres we measured the WW spectra emitted from Au plasma generated with a commercial nanosecond laser with a low-output energy and 10Hz-repwtition. |
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| 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 | 2nd Asia-Pacific Conference on Plasma Physics (AAPPS-DPP2018) | |||||
| 発表年月日 | ||||||
| 日付 | 2018-11-15 | |||||
| 日付タイプ | Issued | |||||
