Far-Infrared and Infrared Spectroscopy of Molecular Ions
分子离子的远红外和红外光谱
基本信息
- 批准号:09490014
- 负责人:
- 金额:$ 4.99万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B)
- 财政年份:1997
- 资助国家:日本
- 起止时间:1997 至 1998
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The purpose of the project is the measurement of far-infrared spectra of molecular ions. For this purpose we first developed the spectroscopic system for molecular ions and improved the frequency-tunable CO_2 laser system. We then observed the rotational spectra of HeH^+ and its isotopic species and analyzed these spectra. We further studied the following protonated rare gases, NeH^+ ArH^+ and KrH^+In the infrared region, we developed a frequency-tunable CO_2 laser system with a high frequency accuracy. This system has been used successfully to the study of infrared-microwave double resonance spectroscopyto observe the rotationalspectrum of the methanol molecule. The spectrum has been also studied theoretically.In accordance with the description for Research Plan, the research results are summarized as follows.(1) Study of rotational spectrum of HeH^+Far-infrared rotational spectra of the four isotopic species of HeH^+ have been observed to determine precise molecular constants.(2) Study of the far-infrared spectra of the other protonated rare gasesRotational spectra of NeH^+ ArH^+ and KrH^+ and their isotopomers have been observed to determine their precise molecular constants.(3) Development of a frequency-tunable CO_2 laser with a high frequency accuracyA frequency stabilized CO_2 laser has been produced, which is used as a frequency reference to improve the frequency accuracy of the 002 laser.(4) Double resonance spectroscopy using the frequency-tunable CO_2 laserRotational transitions in the excited vibrational state of methanol have been observed accurately. The Hamiltonian for a molecule with an internal-rotor has been developed and applied to the analysis of observed transitions.
该项目的目的是测量分子离子的远红外光谱。为此,我们首先研制了分子离子光谱系统,并改进了频率可调谐的CO_2激光系统。然后,我们观察了HeH~+及其同位素物种的转动光谱,并对这些光谱进行了分析。我们在红外区进一步研究了质子化稀有气体NEH~+、ARH~+和KRH~+,研制出了频率可调、频率精度高的CO_2激光系统。该系统已成功地应用于红外-微波双共振光谱的研究,观察了甲醇分子的转动光谱。根据《研究计划》的规定,本文的研究成果概括如下:(1)对HeH~(++)四种同位素的HeH~(++)远红外转动光谱进行了研究,以确定精确的分子常数。(2)对其它质子化稀有气体的远红外光谱进行了研究,观察到了NEH~(++)、ArH~(++)和KRH~(++)及其同位异构体的转动光谱,以确定其精确的分子常数。(3)研制了频率可调谐的高精度CO_2激光器。作为频率基准,提高了002激光器的频率精度。(4)利用频率可调的CO_2激光器,准确观测到了甲醇激发振动态的转动跃迁。发展了具有内转子的分子的哈密顿量,并将其应用于观察到的跃迁的分析。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
F.Matsushima, T,Oka, and K.Takagi: "Observation of Rotational Spectra of ^4HeH^+, ^4HeD^+, ^3HeH^+ and ^3HeD^+" Phys, Rev.Lett.78. 1664-1666 (1997)
F.Matsushima、T,Oka 和 K.Takagi:“^4HeH^、^4HeD^、^3HeH^ 和 ^3HeD^ 旋转光谱的观察”Phys,Rev.Lett.78。
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- 影响因子:0
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Y.B.Duan, Li Wang I.Mukhopadhyay,K.Takagi: "Correlation problems and sorrelation-free torsion-rotation Hamiltonian" J.Chem.Phys.110. 927-935 (1998)
Y.B.Duan、Li Wang I.Mukhopadhyay、K.Takagi:“相关问题和无相关扭转-旋转哈密顿量”J.Chem.Phys.110。
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H.Odashima, F.Matsushima, S.Tsunekawa, and K.Takagi: "Tunable Far-Infrared Spectroscopy of ^<82>KrD^+, ^<84>KrD^+, ^<86>KrD^+ and ^<82>KrH^+" J.Mol.Spectrosc.190. 107-111 (1998)
H.Odashima、F.Matsushima、S.Tsunekawa 和 K.Takagi:“^<82>KrD^、^<84>KrD^、^<86>KrD^ 和 ^<82>KrH 的可调谐远红外光谱
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小田島仁司,松島房和,上里敦,常川省三,高木光司郎: "Tunable for-infrared spectroscopy of ^<82>KrD^+,^<84>KrD^+, and ^<82>KrH^+" J.Mol.Spectrosc.(accepted). (1998)
Hitoshi Odashima、Fusakazu Matsushima、Atsushi Kamisato、Shozo Tsunekawa、Kojiro Takagi:“^<82>KrD^+、^<84>KrD^+ 和 ^<82>KrH^+ 的可调谐红外光谱” J.Mol .Spectrosc.(已接受)(1998)。
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- 影响因子:0
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- 通讯作者:
F.Matsushima, T.Oka and K.Takagi: "Observation of Rotational Spectra of 4HeH+, 4HeD+, 3HeH+ and 3HeD+" Phys.Rev.Lett.78. 1664-1666 (1997)
F.Matsushima、T.Oka 和 K.Takagi:“4HeH、4HeD、3HeH 和 3HeD 旋转光谱的观察”Phys.Rev.Lett.78。
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TAKAGI Kojiro其他文献
TAKAGI Kojiro的其他文献
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{{ truncateString('TAKAGI Kojiro', 18)}}的其他基金
Measurement of Nuclear Spin Conversion Rates in Molecules
分子中核自旋转化率的测量
- 批准号:
11640390 - 财政年份:1999
- 资助金额:
$ 4.99万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
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