Study on the irradiation effect on organic solids by means of vibrational spectroscopy at ver low temperatures

超低温振动光谱研究有机固体辐照效应

• 批准号: 07650992
• 负责人: HASE Hirotomo
• 金额: $ 1.34万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07650992/
• 关键词: very low temperature; vibrational spectroscopy; irradiation effect; organic solids; hydrogen molecule; fullerene anion; 振動分光; ラマン散乱; フラーレン; ガンマシクロデキストリン; ラジカルアニオン; クライオスタット; シクロデキストリン; スペクトロメータ; ガンマ線照射; 放射線照射; 捕捉電子; C_<60>ラジカルアニオン; C_<70

The research results obtained by using the vibrational spectroscopy at very low temperature for the study of the radiation effects on organic solids are as follows :1. The improvement of the cryostat for Raman scattering measurements was carried out. This enabled us to set the irradiated sample at liquid helium temperature in the cryostat without any temperature rise of the sample.2. The cryostat for the gamma-irradiation for 20-30 hours at liquid helium temperature was constructed. With use of the cryostat, the samples for usual ESR and optical measurements as well as Raman spectroscopy were available at very low temperatures.3. We found an anomaly of the spin distribution of hydrogen molecules produced by irradiation of the organic solids at very low temperatures ; the para-hydrogen was selectively produced.4. In order to investigate the interaction between fullerene anion and organic solids by means of the vibrational spectroscopy, we firstly investigated the optical and magnetic properties of the anion at very low temperatures.

利用极低温振动光谱研究有机固体的辐射效应，取得了如下研究结果：1。对用于拉曼散射测量的低温恒温器进行了改进。这使得我们能够将辐照样品设置在低温恒温器中的液氦温度下，而不会使样品的温度升高。研制了能在液氦温度下辐照20-30小时的低温恒温器。利用低温恒温器，可以在很低的温度下获得用于常规ESR和光学测量以及拉曼光谱的样品.我们发现在很低的温度下辐照有机固体产生的氢分子的自旋分布异常;仲氢被选择性地产生.为了利用振动光谱研究富勒烯阴离子与有机固体的相互作用，我们首先研究了富勒烯阴离子在低温下的光学和磁学性质。

项目成果

Hirotomo Hase: "Trapped H_2 and e^-_<sol> in Gamma-Irradiated LiCl/EtOH Solid Solutions" KURRI Progr.Rept.120. (1996)

Hirotomo Hase：“在伽马辐照的 LiCl/EtOH 固体溶液中捕获 H_2 和 e^-_<sol>”KURRI Progr.Rept.120。

長谷 博友: "Interaction between Hydrogen Molecules and Matrix in Organic Solids at Vers Low Tempertures" TT News Letters. (in press). (1998)

Hirotomo Hase：“低温有机固体中氢分子与基质的相互作用”TT 新闻通讯（1998 年）。

Hirotomo Hase(長谷博友): "Comparative ESR study of C_<60> and C_<70> radical anions produced in 8-irradiated" Chemical Physics Letters. 245. 95-101 (1996)

Hirotomo Hase：“8 次照射中产生的 C_<60> 和 C_<70> 自由基阴离子的比较 ESR 研究”化学物理快报 245. 95-101 (1996)。

Hirotomo Hase: "Radiation Induced Stable Fullerene Anion Radical" Viva Origino. (in press). (1998)

Hirotomo Hase：“辐射诱导稳定富勒烯阴离子自由基”Viva Origino。

長谷 博友: "Trapped H_2 and e^-_<sol> in Gamma-Irradiated Licl/EtOH Solid Solutions" KURRI Progr.Rept. 120-120 (1996)

Hirotomo Hase：“在伽玛辐照的 Licl/EtOH 固体溶液中捕获 H_2 和 e^-_<sol>”KURRI Progr.Rept. 120-120 (1996)