Trial production of molecular beam Fourier transform microwave spectrometer designed for solid organic molecule.

固体有机分子分子束傅里叶变换微波谱仪的试制。

• 批准号: 11640513
• 负责人: ONDA Masao
• 金额: $ 2.11万
• 依托单位: Sophia University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11640513/
• 关键词: MB-FTMW; 525φmiller; spectrometer for solid; benzyl alcohol; anisole; benzoic acid-water complex; catecohol; fuluoroanisoles; MB-FTMW; 4〜12GHz領域; 安息香酸-水錯体; カテコール-水; アニソール-水; 安息香酸-水; 大型凹球面鏡

The purpose of this project is a trial production of a sensitive molecular beam Fourier transform microwave spectrometer designed to measure of organic solid or liquid with high boiling point. We improved the nozzle design of our existing spectrometer to make it easier to produce a mixed molecular beam of solid with argon.As the first step we changed the direction of molecular beam to be parallel to that of microwave propagation. This improvement is after Grabow (Kiel U., Germany) and Lovas (NIST, USA). As the back of the mirror faces to the outer of the vacuum chamber, the handling of solid sample become easy.We purchased by this grant the microwave amplifier and the image rejection mixer to improve the sensitivity by increasing of inlet microwave power and reducing the noise of the microwave circuit.As the second step we are constructing a Fabry-Perot cavity having two concave mirrors (550mm diameter) for two years when we got the previous grant. We constructed the tool for polishing the mirrors with low price.Our purpose of this project is to determine a molecular structure of the complex between biomolecule and water. We tried to the measure spectra of these complex ; benzoic acid〜water, catechol〜water, anisol〜water, however we can not observe the spectral lines. We estimated the structure of benzoic acid〜water complex by ab initio calculation.

该项目的目的是敏感的分子束傅立叶变换微波光谱仪的试验生产，旨在测量具有高沸点的有机固体或液体。我们改进了现有光谱仪的喷嘴设计，使其更容易与氩气生成混合的分子束。作为第一步，我们改变了分子束的方向，使得与微波繁殖相似。这种改进是在Grabow（德国Kiel U.）和Lovas（美国NIST）之后的改进。当镜子的背面朝向真空室的外部时，固体样品的处理变得容易。我们购买了微波放大器和图像拒绝混合器，以提高入口微波功率的敏感性来提高敏感性，并减少Microwave电路的噪声。在第二步中，我们将获得Fabry-Perrot caviter（550 compave）（550 compave ofer compave）（550 compave）。我们构建了以低价抛光镜子的工具。我们的目的是确定生物分子和水之间复合物的分子结构。我们尝试了这些复合物的测量光谱。苯甲酸〜水，catechol〜水，Aniso〜水，但是我们无法观察到光谱线。我们通过从头算计算估计了苯甲酸〜水复合物的结构。

项目成果

M.Onda, M.Asai, K.Takise, K.Kuwae, K.Hayami, A.Kuroe, M.Mori, H.Miyazaki, N.Suzuki and I.Yamaguchi: "Microwave Spectrum of Benzoic Acid"J.Mol.Struct.. 482-483. 301-303 (1999)

M.Onda、M.Asai、K.Takise、K.Kuwae、K.Hayami、A.Kuroe、M.Mori、H.Miyazaki、N.Suzuki 和 I.Yamaguchi：“苯甲酸的微波光谱”J.Mol