This work calculates the Lorentz–Lorenz coefficient with the refractive index and density values of various molecules in their solid phase measured in our laboratory under astrophysical conditions. This was completed for a range of temperatures from 13 K to close to the sublimation temperature for each molecule. The studied molecules were N₂, CO₂, NH₃, CH₄, CH₃OH, C₂H₄, and C₂H₆. For CO₂, our results match those found in the unique similar previous work in the literature. The results obtained for NH₃ and CH₃OH are relevant because they confirm that the procedure adopted is applicable also to polar molecules. The study presented here updates the previous work on these molecules by focusing on their solid states under astrophysical conditions and at a range of temperatures. The knowledge of the Lorentz–Lorenz coefficient in a specific temperature range allows for calculating the density using only the refractive index.

这项工作计算了洛伦兹-洛伦茨系数，以及在天体物理条件下在我们实验室中测得的固相中各种分子的折射率和密度值。在从13 K到接近每个分子的升华温度的温度范围内完成此操作。研究的分子是N ₂，CO ₂，NH ₃，CH ₄，CH ₃ OH，C ₂ H ₄和C ₂ H ₆。对于CO ₂，我们的结果与文献中独特的类似先前工作中发现的结果相符。NH ₃和CH _3的结果OH是重要的，因为它们确认所采用的程序也适用于极性分子。此处提出的研究通过关注在天体物理条件和一定温度范围内的固态来更新有关这些分子的先前工作。对特定温度范围内的洛伦兹-洛伦茨系数的了解允许仅使用折射率来计算密度。