Development of Multiple microspectometer in the Visible/Vacuum-Ultraviolet Region

可见光/真空紫外区多重显微光谱仪的研制

• 批准号: 09355004
• 负责人: WATANABE Makoto
• 金额: $ 19.14万
• 依托单位: TOHOKU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09355004/
• 关键词: microspectroscopy; Schwarzschild objective; ultraviolet; absorption; reflection; fluorescence; photoemission; シュパルツシルト縮小光学系; シュワルツシルド縮小光学系

In the synthesizing process of new materials, it is very important to make optical measurements in the fundamental absorption region for the assignment of the materials, the evaluation of impurity- and carrier- concentration and the study of electronic structures. However, at the early stage of the synthesizing process, it is rare to be able to grow crystals large enough to make optical measurements. Therefore the purpose of this study is to design and fabricate a scanning multiple microspectrometer which enables absorption/reflection, fluorescence and photoelectron measurements in the 600-30 nm region. The Schwarzschild objective composed of a concave and a convex mirrors is used to get a microbeam. The sample can be cooled down to the liquid nitrogen temperature. At the first time, the Schwarzschild objective was checked in the visible-ultraviolet region. The reflectance of a high Tc material of BiィイD22ィエD2SrィイD22ィエD2CaCuィイD22ィエD2OィイD28ィエD2 could be measured on a small flat surface of its whisker crystals. The measured reflectance is the highest one obtained so far. The Schwarzschild objective was equipped with a Seya-Namioka monochromator for the measurements in the vacuum ultraviolet. A fluorescence spectrometer was attached to it. A photoelectron spectrometer using He-I resonance line was already fabricated. By the use of the Schwarzschild objective equipped with the Seya-Namioka monochromator, the absorption/reflection, fluorescence and the photoelectron measurements should be carried out. For it, two color multilayers were developed, reflecting not only He-I and He-II resonance lines for the photoelectron spectroscopy, but also the light in their longer wave length region for the other spectroscopy. The two-color multilayers will be evaporated onto the grating of the Seya-Namioka monochromator and the mirrors of the Schwarzschild objective. The microspectroscopy of magnetic materials of small size will be made in near future.

在新材料的合成过程中，基本吸收区的光学测量对于材料的归属、杂质和载流子浓度的估算以及电子结构的研究都是非常重要的。然而，在合成过程的早期阶段，很少能够生长出足够大的晶体来进行光学测量。因此，本研究的目的是设计和制造一个扫描多显微光谱仪，使吸收/反射，荧光和光电子测量在600 - 30 nm的区域。采用由一个凹面镜和一个凸面镜组成的史瓦西物镜来获得微光束。可以将样品冷却至液氮温度。第一次，史瓦西物镜在可见-紫外区域进行了检查。高Tc材料Bi_（22）Nd_（22）Sr_（22）Nd_（22）Ca_（22）Cu_（22）Nd_（28）Nd_（22）Nd_（28）Nd_（22）Nd_（28）Nd测得的反射率是迄今为止获得的最高反射率。史瓦西物镜配备了Seya-Namioka单色仪，用于真空紫外线的测量。在此基础上，研制了一台He-I共振线光电子能谱仪。通过使用配备Seya-Namioka单色仪的Schwarzschild物镜，应进行吸收/反射、荧光和光电子测量。为此，开发了两种颜色的多层膜，不仅反射用于光电子能谱的He-I和He-II共振线，而且还反射用于其他光谱的较长波长区域的光。双色多层膜将被蒸发到Seya-Namioka单色器的光栅和Schwarzschild物镜的反射镜上。小尺寸磁性材料的显微谱学将在不久的将来实现。

项目成果

T.Ejima: "Two-color Reflection Multilayers for He-I and He-II Resonance Lines for Micro-UPS Using Schwarzschild Objective"Abs. Of Int. Conf. On X-ray Microscopy (Berkeley, 1999). 139-140 (1999)

T.Ejima：“使用 Schwarzschild 物镜用于微型 UPS 的 He-I 和 He-II 共振线的双色反射多层”Abs。

T.Ejima: "Two-color Reflection Multilayers for He-I and He-I I Resonance Lines for Micro-UPS Using Schwarzschild Objective"Abs.of Int.Conf.on X-ray Microscopy(Berkeley,1999). 139-140 (1999)

T.Ejima：“使用 Schwarzschild 物镜的 Micro-UPS 的 He-I 和 He-I I 共振线的双色反射多层”Abs.of Int.Conf.on X 射线显微镜（伯克利，1999）。

T. Ejima et al.: "Two-color Reflection Multilayers for He-I and He-II Resonance Lines for Micro-UPS Using Schwarzschild Objective"Abs. Of Int. Conf. On X-ray Microscopy, Berkeley. 139-140 (1999)

T. Ejima 等人：“使用 Schwarzschild 物镜的 Micro-UPS 的 He-I 和 He-II 共振线的双色反射多层”Abs。