The axes in Raman spectroscopy

Thread starter hokhani
Start date Jun 10, 2013
Tags

Axes Raman Raman spectroscopy Spectroscopy

In summary, the axes in Raman spectroscopy refer to the x and y axes on a graph used to plot the Raman spectrum. The x-axis represents the Raman shift, which is related to the molecular vibrations, and is typically expressed in units of wavenumbers. The y-axis represents the intensity of the scattered light, which is directly proportional to the concentration of the sample being analyzed. These axes provide valuable information about the molecular structure and composition of a sample.

Jun 10, 2013

hokhani

What are the axes(horizontal & vertical axes) in a Raman spectrum?

Physics news on Phys.org

Jun 13, 2013

Black Nova

I've seen that they usually label x-axis as Wavenumber [cm^-1] and the y-axis as Intensity [Arbitrary Units]

1. What are the axes in Raman spectroscopy?

The axes in Raman spectroscopy refer to the two axes on a graph used to plot the Raman spectrum. The x-axis represents the Raman shift, which is the difference in energy between the incident and scattered light. The y-axis represents the intensity of the scattered light.

2. How do the axes in Raman spectroscopy relate to the molecular vibrations?

The Raman shift on the x-axis corresponds to the vibrational modes of the molecules being analyzed. The peaks on the spectrum represent the different vibrational modes and the intensity of the peaks is related to the strength of the vibrational modes.

3. What units are used on the Raman shift axis?

The Raman shift axis is typically expressed in units of wavenumbers, which represent the inverse of the wavelength of the light used for the analysis. This unit is commonly denoted as cm^-1.

4. How does the intensity axis in Raman spectroscopy relate to the concentration of a sample?

The intensity of the peaks on a Raman spectrum is directly proportional to the concentration of the sample being analyzed. This is because the intensity is affected by the number of molecules present in the sample, which is directly related to its concentration.

5. What is the significance of the axes in Raman spectroscopy?

The axes in Raman spectroscopy provide valuable information about the molecular structure and composition of a sample. The Raman shift axis reveals the vibrational modes of the molecules, while the intensity axis can provide information about the concentration and chemical bonds present in the sample.