FT IR Spectroscopy
What is the name given to the relaxation process due to an interaction between an excited nucleus and the magnetic fields caused by nuclei in molecules moving around in the sample?

None of these
Spin - lattice relaxation
Spin - spin relaxation
Spin - spin - spin relaxation

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FT IR Spectroscopy
What is meant by rotating frame of reference?

If the laboratory itself is imagined to be rotated at the Larmor frequency, viewing that individual magnetic moment vectors are fixed in space
That the detector rotates around the sample
None of these
That the sample is spun rapidly in the applied field

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FT IR Spectroscopy
When radiation energy is absorbed by a spin 1/2 nucleus in a magnetic field, what happens?

The angle of precession flips so that the magnetic moment of the nucleus opposes the applied field
The processional frequency of the nucleus increases
The nucleus spins faster
None of these

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FT IR Spectroscopy
In scanning electron microscopy

a specimen is fixed and then coated with transition metal
a specimen is fixed and then coated with thin layer of a heavy metal
a specimen is not fixed and then coated with thin layer of a heavy metal
None of these

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