Calculation of absorption coefficients of gases at moderate temperatures

In summary, the purpose of calculating absorption coefficients of gases at moderate temperatures is to measure the amount of light absorbed by a gas at a specific temperature. This information is important in various scientific fields and can help determine the behavior of gases in different environments. The absorption coefficient is typically calculated using spectroscopic techniques, such as infrared or ultraviolet-visible spectroscopy. Factors such as gas composition, temperature, and pressure can affect the absorption coefficient, and considering moderate temperatures is crucial for real-world applications. However, there are limitations to these calculations, such as complex gas absorption spectra and potential errors in experimental measurements or input parameters.
  • #1
a_potato
27
4
Hello chaps,

I'm trying to calculate absorption coefficients of gases at moderate temperatures ie ranges in which diatomic gases (such as N2 orO2) are partially disassociated or ionised, therefore including molecular bands as well as continuum. Can anyone recommend some suitable reading material for me to get started on this problem. Many thanks
 
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  • #2
https://archive.org/details/IntroductionToMolecularSpectroscopy
 
  • #3
Thanks for that. Looks very comprehensive.
 

Related to Calculation of absorption coefficients of gases at moderate temperatures

What is the purpose of calculating absorption coefficients of gases at moderate temperatures?

The absorption coefficient of a gas at moderate temperatures is a measure of how much light is absorbed by the gas at a specific temperature. This information is important in a variety of scientific fields, including atmospheric science, combustion research, and materials science, as it can help determine the behavior of gases in different environments.

How is the absorption coefficient of a gas at moderate temperatures calculated?

The absorption coefficient of a gas at moderate temperatures is typically calculated using spectroscopic techniques, which involve studying the interaction between light and matter. This can include techniques such as infrared spectroscopy, which measures the absorption of infrared light by a gas sample, or ultraviolet-visible spectroscopy, which measures the absorption of UV or visible light.

What factors can affect the absorption coefficient of a gas at moderate temperatures?

Several factors can influence the absorption coefficient of a gas at moderate temperatures, including the gas composition, temperature, and pressure. Additionally, the path length of the light through the gas sample and the concentration of the gas can also impact the absorption coefficient.

Why is it important to consider moderate temperatures when calculating absorption coefficients of gases?

Moderate temperatures are important to consider because they are relevant to many real-world applications. Many processes, such as combustion and atmospheric reactions, occur at moderate temperatures, so understanding the absorption coefficients of gases in these conditions is crucial for accurate predictions and analysis.

Are there any limitations to calculating absorption coefficients of gases at moderate temperatures?

While calculating absorption coefficients of gases at moderate temperatures can provide valuable information, there are limitations to these calculations. Some gases may have complex absorption spectra that are difficult to accurately measure, and the interactions between gases and other substances in a mixture can also affect the absorption coefficient. Additionally, the accuracy of the calculations may be affected by experimental errors or uncertainties in the input parameters.

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