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首页> 外文期刊>The Journal of Chemical Physics >ROTATIONAL ANALYSIS OF THE NU(1) BAND OF TRICHLOROFLUOROMETHANE FROM HIGH RESOLUTION FOURIER TRANSFORM AND DIODE LASER SPECTRA OF SUPERSONIC JETS AND ISOTOPICALLY ENRICHED SAMPLES
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ROTATIONAL ANALYSIS OF THE NU(1) BAND OF TRICHLOROFLUOROMETHANE FROM HIGH RESOLUTION FOURIER TRANSFORM AND DIODE LASER SPECTRA OF SUPERSONIC JETS AND ISOTOPICALLY ENRICHED SAMPLES

机译：超音速射流和同位素富集样品的高分辨率傅里叶变换和二极管激光光谱对三氟甲基氟烷的NU（1）带的旋转分析

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The spectrum of CCl3F (trichlorofluoromethane, CFC 11) has been measured in the region of the nu(1) fundamental (1050-1120 cm(-1)) by high resolution interferometric Fourier-transform spectroscopy [0.004 cm(-1) bandwidth full width at half maximum, apodized] and by diode laser spectroscopy (bandwidth 0.0008-0.0020 cm(-1) FWHM) at room temperature, in cold cells and in supersonic jet expansions. Fourier-transform infrared and diode laser spectra of isotopically pure (CCl3F)-Cl-35 have been recorded at room temperature in static cells. The (CCl3F)-Cl-35 spectra allowed an analysis of the rotational structure to be started successfully for the first time, The rotational analysis of the isotopic species (CCl2ClF)-Cl-35-Cl-37 and (CClCl2F)-Cl-35-Cl-37, which are asymmetric rotors, was initiated from diode laser spectra of natural CCl3F with a rotational temperature of about 20 K (5% seeded in He) resulting from expansion in a supersonic pulsed slit jet. The rotational analysis yielded effective Hamiltonian constants including accurate band centers for the three most abundant isotopomers (CCl3F)-Cl-35 (nu(1) = 1081.2801 cm(-1) (CCl2ClF)-Cl-35-Cl-37 (nu(1) = 1080.7330 cm(-1)), and (CClCl2F)-Cl-35-Cl-37 (nu(1)=1080.0663 cm(-1)), excited state rotational constants, and for (CCl3F)-Cl-35, quartic centrifugal distortion constants. The results are important for and discussed in relation to simulations of atmospheric absorption, line coincidences with CO2 lasers for sub-Doppler spectroscopy, as well as IR multiphoton excitation and infrared laser chemistry. (C) 1995 American Institute of Physics. [References: 53]
机译：通过高分辨率的干涉傅里叶变换光谱[0.004 cm（-1）带宽已满，已在nu（1）基本（1050-1120 cm（-1））的区域中测量了CCl3F（三氯氟甲烷，CFC 11）的光谱。的最大宽度的一半，切趾]，并通过二极管激光光谱法（带宽0.0008-0.0020 cm（-1）FWHM）在室温下，在冷室和超音速喷射扩展中使用。室温下在静态电池中已记录了同位素纯（CCl3F）-Cl-35的傅立叶变换红外光谱和二极管激光光谱。 （CCl3F）-Cl-35光谱使旋转结构的分析首次成功开始。同位素种类（CCl2ClF）-Cl-35-Cl-37和（CClCl2F）-Cl-的旋转分析35-Cl-37是非对称转子，由天然CCl3F的二极管激光光谱引发，其旋转温度约为20 K（播种于He中的5％），是由超音速脉冲狭缝喷射产生的。旋转分析产生有效的哈密顿常数，包括三个最丰富的同位素（CCl3F）-Cl-35（nu（1）= 1081.2801 cm（-1）（CCl2ClF）-Cl-35-Cl-37（nu（ 1）= 1080.7330 cm（-1））和（CClCl2F）-Cl-35-Cl-37（nu（1）= 1080.0663 cm（-1）），激发态旋转常数以及（CCl3F）-Cl- 35，四次离心畸变常数，该结果对于大气吸收的模拟，用于亚多普勒光谱的CO2激光的线重合以及IR多光子激发和红外激光化学具有重要意义并在中进行讨论（C）1995美国研究所物理系。[参考：53]

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