10 Questions
What happens when the resonance condition is met by paramagnetic species in the presence of microwaves?
Absorbs energy
How is an ESR spectrum obtained?
By plotting intensity against the strength of magnetic field
What does the area covered by the absorption or derivative curve in an ESR spectrum indicate?
Number of unpaired electrons in the sample
What is the most widely used standard sample in ESR spectroscopy for comparison of unpaired electrons?
1,1-diphenyl-picrylhydrazyl (DPPH) free radical
What type of spectroscopy is used to obtain an ESR spectrum?
Electron Spin Resonance (ESR) spectroscopy
What is detected and recorded by an ESR instrument?
The decrease in microwave power
In Raman effect, what is the scattering called if the frequency of the scattered light is the same as the incident light?
Rayleigh scattering
What happens when a sample is exposed to monochromatic light in the visible region in Raman spectroscopy?
Absorbs light and scatters light in all directions
How is the number of unpaired electrons in a sample calculated in ESR spectroscopy?
By comparison with a standard sample with known unpaired electrons
What is the purpose of Fourier Transform Infrared (FTIR) spectroscopy?
To analyze the vibrational modes of molecules
Test your knowledge on the components of an x-ray detector, including the aperture, electron trap, polymer window, and silicon crystal. Learn how each component contributes to the proper functioning of the detector.
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