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首页> 外文会议>13th Symposium and School on High-Resolution Molecular Spectroscopy >Experimental bandshapes of the v3 band of CH3F in helium: the role of interbranch and intrabranch line mixing
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Experimental bandshapes of the v3 band of CH3F in helium: the role of interbranch and intrabranch line mixing

机译：氦气中CH3F v3谱带的实验谱带：分支间和分支内混合的作用

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Abstract: We measured a series of absorption profiles of the v$-3$/ band of CH$-3$/F perturbed by helium. The measurements were performed at room temperature for helium pressures from 1 to 90 atm. We observe significant deviations of measured profiles with respect to those calculated as a sum of lines having Lorentzian shapes. To interpret the observed deviations, we consider various models of line mixing. The calculations performed in the ECS approximation provide the most reasonable agreement with the measured band shapes reproducing the existing data on line broadening coefficients within the limits of experimental uncertainty. Special attention is paid to the analysis of the differences of interbranch and intrabranch line mixing, that is to the structure of relaxation matrix.!5
机译：摘要：我们测量了CH $ -3 $ / F的v $ -3 $ /带受氦干扰的一系列吸收曲线。测量是在室温下针对1至90 atm的氦气压力进行的。我们观察到相对于作为具有洛伦兹形状的线的总和而计算出的轮廓，测量轮廓存在明显偏差。为了解释观察到的偏差，我们考虑线混合的各种模型。在ECS近似中执行的计算与所测得的能带形状提供了最合理的一致性，从而再现了在实验不确定性范围内的线展宽系数的现有数据。特别注意分析分支间和分支内线混合的差异，即弛豫矩阵的结构。5

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