Development of femto-second X-ray source

飞秒X射线源的研制

• 批准号: 22656008
• 负责人: MATSUO Jiro
• 金额: $ 2.27万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22656008/
• 关键词: フェムト秒; X線回折; 相転移; レーザー; 結晶

Compact femto-second X-ray source has been developed with low pulse power high reputation rate femtosecond laser, which is commercially available. This source provides enough pulse X-ray for diffraction experiment, when 800 nm laser beam was focused down to a few. m by using optical chromatic lens. The life time of the source is quite long(a few days!), because rotating Cu target with translational motion is used under atmospheric pressure. High mechanical precision is necessary to provide stable X-ray.Ultra-fast melting of semiconductor surface was observed with this system. This phenomenon is very important for not only fundamental research but also applications, such as laser annealing and optical memories. Comparison of the results with previous study, in which high power low reputation rate laser was utilized, showed that this new femto-second X-ray source has comparable capability in X-ray diffraction experiments.

采用低脉冲功率高信誉飞秒激光器开发出紧凑型飞秒X射线源，并已投入商用。当800 nm激光束聚焦到几个时，该源可以为衍射实验提供足够的脉冲X射线。 m 通过使用光学彩色透镜。源的寿命相当长（几天！），因为在大气压力下使用具有平移运动的旋转铜靶。为了提供稳定的X射线，需要高机械精度。用该系统观察到半导体表面的超快熔化。这种现象不仅对于基础研究而且对于激光退火和光学存储器等应用都非常重要。与之前使用高功率低信誉率激光器的研究结果进行比较，表明这种新型飞秒X射线源在X射线衍射实验中具有相当的能力。

项目成果

Coherent Acoustic Phonons in Highly Oriented Bismuth Films Monitored by Femtosecond Electron Diffraction

通过飞秒电子衍射监测高取向铋薄膜中的相干声声子

• 发表时间: 2010
• 作者: G. Sciaini;M. Hada;J. Matsuo;A. Karantza;G. Moriena;R. Miller
• 通讯作者: R. Miller

Structure dynamics of epitaxial VO2 film on c-Al_2O_3 by using an in-air time-resolved X-ray diffraction

利用空气中时间分辨 X 射线衍射研究 c-Al_2O_3 上外延 VO2 薄膜的结构动力学

• 发表时间: 2010
• 作者: M.Hada;K.Okimura;J.Matsuo
• 通讯作者: J.Matsuo

Structure dynamics of epitaxial VO_2 film on c-Al_2O_3 by using an in-air time-resolved X-ray diffraction

利用空气中时间分辨X射线衍射研究c-Al_2O_3上外延VO_2薄膜的结构动力学

• 发表时间: 2010
• 作者: M. Hada;K. Okimura;J. Matsuo
• 通讯作者: J. Matsuo

Evaluation of Surface Damage of Organic Films due to Irradiation with Energetic Ion Beams

高能离子束照射造成的有机薄膜表面损伤的评估

• 发表时间: 2010
• 期刊: AIP Conference Proceedings
• 作者: M.Hada;Y.Hontani;S.Ibuki;K.Ichiki;S.Ninomiya;T.Seki;T.Aoki;J.Matsuo
• 通讯作者: J.Matsuo

Evaluation of lattice motion in CdTe single crystal using in-air tabletop time-resolved X-ray diffract meter

使用空气桌面时间分辨 X 射线衍射仪评估 CdTe 单晶的晶格运动

• 发表时间: 2011
• 期刊: Material Science Engineering
• 作者: M. Hada;J. Matsuo
• 通讯作者: J. Matsuo