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Y. Ikemoto T. Moriwaki T. Hirono S. Kimura K. Shinoda M. Matsunami N. Nagai T. Nanba K. Kobayashi H. Kimura 《Infrared Physics & Technology》2004,45(5-6):369-373
BL43IR of SPring-8 has been constructed for the infrared materials researches, and it covers a wide spectral range from 100 to 20,000 cm−1. The microspectroscopy station of this BL has a spatial resolution smaller than 10 μm in diameter in the mid-infrared region without apertures. This station had been mainly used within mid-infrared region, and its performance in the far-infrared region had not been tested. In this paper, we examined the capability of the microscope in the far-infrared region and the spatial resolution is found to be almost at the diffraction limit. The microspectroscopy station has been revealed to have a good performance for doing materials researches in all the spectral range available. 相似文献
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ABSTRACTThe structural, electronic, and magnetic properties of materials under high pressure are of fundamental interest in physics, chemistry, materials science, and earth sciences. Among several hard X-ray-based techniques, X-ray emission spectroscopy (XES) provides a powerful tool to probe element-specific information for understanding the electronic and magnetic properties of materials under high pressure. Here, we discuss on the particular requirements and instrumentation used in high pressure XES experiments. We then present several examples to illustrate the recent progress in high pressure XES studies at the Advanced Photon Source, followed by an outlook toward future development in high pressure XES. 相似文献
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Fernando Sannibale Augusto Marcelli Plinio Innocenzi 《Journal of synchrotron radiation》2008,15(6):655-659
IKNO (Innovation and KNOwledge) is a proposal for a multi‐user facility based on an electron storage ring optimized for the generation of coherent synchrotron radiation (CSR) in the terahertz frequency range, and of broadband incoherent synchrotron radiation ranging from the IR to the VUV. IKNO can be operated in an ultra‐stable CSR mode with photon flux in the terahertz frequency region up to nine orders of magnitude higher than in existing third‐generation light sources. Simultaneously to the CSR operation, broadband incoherent synchrotron radiation up to VUV frequencies is available at the beamline ports. The main characteristics of the IKNO storage and its performance in terms of CSR and incoherent synchrotron radiation are described in this paper. The proposed location for the infrastructure facility is Sardinia, Italy. 相似文献
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Y. Ikemoto T. Moriwaki H. Okamura T. Sasaki N. Yoneyama A. Taguchi Y. Inouye S. Kawata T. Kinoshita 《Infrared Physics & Technology》2008,51(5):417-419
The authors report infrared near-field spectroscopy using synchrotron radiation at BL43IR, SPring-8 in the finger print region. At the microspectroscopy station, the infrared synchrotron radiation beam is focused on a cantilever probe with a 3 μm square aperture. A comb-shaped Au electrode with the width of 3 μm and the distance of 3 μm is used for the reflection measurement. The Au electrodes can be resolved at 650 cm−1 and the resolution is estimated to be λ/5. 相似文献
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随着第四代同步辐射光源的兴起,得益于X射线亮度和相干性的大幅度提升,同步辐射实验技术在谱学、散射和成像等方面取得了显著进步。这些技术能够探测复杂非均匀体系和动态变化过程中的物质结构、成分、化学价态、电子态和磁性等关键信息,在基础科学领域和应用基础研究中发挥关键作用。文章旨在介绍第四代同步辐射光源的线站技术优势,并结合具体例子探讨其在若干物理研究中的应用,同时也讨论了当前存在的工程技术挑战。希望人们能够了解第四代同步辐射光源的光束线站的特点和应用潜力,以促进其在各个科研领域的推广。 相似文献
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Anodic oxidation and open circuit corrosion of iron was studied in a CO2 saturated, carbonate buffer system. Cyclic voltammograms were obtained and used as a guide for obtaining corrosion product at constant potentials on the surface of iron. Synchrotron radiation was used to obtain infrared spectra of the corrosion scales. Spectra were obtained ex situ and in situ for areas of general oxidation and for regions of localized oxidation. 相似文献
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合肥同步辐射软X射线显微术研究 总被引:1,自引:0,他引:1
合肥国家同步辐射实验室首期建设的光束线之一用于软X射线显微成像研究。实验站现已装置初型的扫描透射X射线显微镜,并正在进行亲一代的扫描显微建设,同时还使同步辐射光进行接触软X射线呈微成像研究,并对选取的一些生物样品进行了成像试验。本文介绍了合肥同步辐射光源上软X射线显微术实验线站的建设及完成的一些实验结果。 相似文献
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介绍了双压电片镜自适应光学技术,同时为其在同步辐射光学领域中的应用与进一步发展提供前瞻性的思考与探索。根据目前已公开发表的相关文献资料,总结介绍了双压电片镜自适应光学技术,阐述了该技术的工作机理与关键参数,并对其在国际上具有代表性的同步辐射机构中的应用情况作出描述,并指出涉及的关键技术问题与未来的发展趋势:不仅要有效地解决"连接点效应"对双压电片镜技术的负面影响,还要实现亚微米乃至纳米级的聚焦光斑,这两项内容都是双压电片镜技术需要进一步解决的重要问题。未来,双压电片镜自适应光学技术可望在我国先进的第三代同步辐射装置—"上海光源(Shanghai Synchrotron Radiation Facility,SSRF)"二期工程建设中得到应用。 相似文献
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The characteristics and applicability of the absorption spectroscopy system using the coherent transition radiation light source have been investigated. The configurations of the system are relatively simple. The operational conditions of an electron linear accelerator have been evaluated. The stability of the light intensity has been within ±2–3% in a wavenumber range of 4–13 cm−1. The light intensity has been found to be more than six orders of magnitude higher than that for the lowest limit for detection. 相似文献
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BL43IR at SPring-8 is overviewed regarding the beamline properties on the flux, the brilliance and the noise in comparison with the conventional thermal radiation (TR). The flux is comparable to the TR, and what makes the most of BL43IR is to utilize the high brilliance. We redirect our strategy to concentrate on the microscopes with highly brilliant infrared radiation from SPring-8 and attract the vast TR spectroscopy community. 相似文献
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基座作为磁铁支架的基础,其制作工艺以及与地面连接固定方式的不同将影响磁铁与支架的稳定性。基于先进光源对磁铁支撑系统稳定性的极高要求,开展了基座安装浇筑实验,选取工程上常用的几种混凝土施工工艺,制作统一外形尺寸的实验件,通过锤击法逐一测试其固有频率,评估其稳定性,得到二次灌浆可有效提高稳定性、环氧基灌浆料获得的稳定性优于水泥基灌浆料等结论。基于固有频率测试结果,以HEPS支撑系统为例分析了不同的基座安装方式对系统模态的影响。 相似文献
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微藻富含类胡萝卜素、维生素、蛋白质、多不饱和脂肪酸等多种人体和动物所必需的营养成分,同时在水生态系统的维持和保护中也扮演着重要的角色,因此开展微藻生物学的研究具有十分重要的实际应用价值。传统的微藻成分的检测分析需要经过微藻细胞研磨破碎、有机溶剂分离提取、液(气)相检测等一系列的繁琐的操作步骤,有费时、需要高昂的仪器设备、操作过程复杂等缺点,因此需要发展更加快速高效的微藻细胞组分检测分析技术。红外光谱作为一种高效的物质检测和分析手段可以实现对微藻样品中的蛋白、脂类、核酸、多糖、叶绿素、类胡萝卜素等多种成分同时分析,具有简单、快速和无损检测等优势,特别是结合显微镜技术的红外光谱成像可以在微空间尺度上研究单一细胞或组织中各组分的变化。近年来,尤其是随着同步辐射技术的迅速发展,为红外光谱仪器提供质量更好、能量更高的同步辐射光源,使得红外光谱显微光谱及成像检测技术具有更高的灵敏度和空间分辨率,实现了能够在细胞和亚细胞尺度上对个体进行高空间分辨的原位观测,这在一定程度上解决了许多常规的检测分析技术不能同时兼顾高通量测量和高空间分辨率观察之间的矛盾。首先介绍了红外光谱技术的原理及其特点并分析了显微红外光谱及成像技术在生物样品检测中的独特优势,特别介绍红外光谱结合化学计量学的分析方法在生物学研究领域的应用。接下来综述了此项技术在分类鉴定、生长代谢监测、育种、水环境、食品医药等与微藻相关领域国内外的应用研究进展。比如,结合化学计量学方法红外光谱能够进行微藻的快速鉴定、判别和分类。利用红外光谱多组分快速检测的优势,可以实现微藻生长代谢的研究。基于红外光谱无损、高效检测的特点,可以实现油脂、β-胡萝卜素、虾青素等高产藻株的快速筛选。另外,微藻还可以有效地吸附废水中的重金属和有机活性染料,利用红外光谱可以对其吸附和降解环境污染物的机理进行研究。红外光谱还能够快速高效地实现微藻成分的分析和鉴定,因而可以用于微藻食品药品质量的检测和真伪的鉴定。然而,红外光谱在微藻的研究和应用方面还处于发展阶段,尚存在着一定的缺点和不足,对此进行了讨论和分析并提供了相应的解决方案。最后,对红外光谱在微藻的规模化养殖、高产藻株的筛选、微藻的生理、细胞器的结构和功能的研究等领域进行了展望。 相似文献