Carbon disulfide, an important sulfur-containing species, has strong absorption lines in the wavelength range of 188 nm to 215 nm. It is difficult to accurately measure the absorption cross sections of carbon disulfide because carbon disulfide will be easily converted into carbon sulfide when it is exposed to ultraviolet light. In this study, the absorption cross sections of carbon disulfide were measured by reducing carbon disulfide conversion. The factors affecting carbon disulfide conversion, including gas flow rate, ultraviolet light intensity, and duration of illumination, were studied to reduce the conversion of carbon disulfide by controlling experimental conditions in the experiment. Finally, the absorption cross sections of carbon disulfide at room temperature and atmospheric pressure were calculated using the absorption spectrum and the carbon disulfide concentration in the absence of carbon disulfide conversion. The wavelengths of 16 absorption peaks on the carbon disulfide absorption cross sections of the vibration change were marked. Carbon disulfide has the maximum absorption cross section of 4.5 × 10–16 cm2/molecule at a wavelength of 198.10 nm.

中文翻译：

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EXPRESS：在室温和大气压下测量 188-215 nm 区域的 CS2 吸收截面

二硫化碳是一种重要的含硫物质，在 188 nm 至 215 nm 的波长范围内具有强吸收线。二硫化碳的吸收截面很难准确测量，因为二硫化碳在紫外线照射下很容易转化为硫化碳。在这项研究中，二硫化碳的吸收截面是通过减少二硫化碳转化率来测量的。研究了影响二硫化碳转化率的因素，包括气体流量、紫外光强度和光照时间，通过控制实验条件来降低二硫化碳的转化率。最后，在没有二硫化碳转化的情况下，使用吸收光谱和二硫化碳浓度计算室温和大气压下二硫化碳的吸收截面。在振动变化的二硫化碳吸收截面上标记了16个吸收峰的波长。二硫化碳在 198.10 nm 波长处的最大吸收截面为 4.5 × 10–16 cm2/分子。