WEKO3
アイテム
Observation of enhancement in water window laser plasma X-ray under nitrogen atmosphere
https://repo.qst.go.jp/records/72991
https://repo.qst.go.jp/records/72991074500d5-7258-4942-98bf-78309e9d2ec3
| 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 | Observation of enhancement in water window laser plasma X-ray under 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 |
Matsumoto, Y.
× Matsumoto, Y.× John, C.× Kakunaka, N.× Moroshita, T.× Yu, Jin J.× 岸本, 牧× Namba, S.× 岸本 牧 |
|||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | X-ray microscope using water window (WW) X-rays (2.3 to 4.4 nm) is expected as one of the tools to observe living cells and biomolecules. In order to obtain their images with a higher spatial resolution, X-ray photons number has to be increased significantly. Recently, we found that the WW intensity was enormously enhanced when a gold target was irradiated with a laser pulse (1064 nm, ~7 ns, 1 J) under low-pressure N2 atmosphere. In order to clarify the mechanism of the phenomenon, emission spectroscopy was carried out under various gas species (N2, O2, Ne, He and Ar) and their pressures up to 1 kPa. For X-ray measurement, a grazing incidence spectrometer (flat field grating: 2400 grooves/mm) with a toroidal mirror was used. In addition, a pinhole camera with an aperture of 10 mm was installed to measure two dimensional X-ray images. The mechanism of the WW X-ray enhancement will be described in terms of atomic physics, especially, X-ray innershell ionization and subsequent Auger electron process. | |||||
| 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 | 60th Annual Meeting of the APS Division of Plasma Physics | |||||
| 発表年月日 | ||||||
| 日付 | 2018-11-08 | |||||
| 日付タイプ | Issued | |||||
