0
$\begingroup$

What is harmonic and fundamental bands in IR spectroscopy?

I'm trying to find exact definitions.

I guess that fundamental is $1\leftarrow 0$ transition (the most intense and energetic) and harmonic is other transitions like $2\leftarrow 0$ or $2\leftarrow 1$ (less intense and less energetic).

Is it so?

Improve this question
$\endgroup$

1 Answer 1

Reset to default
1
$\begingroup$

Almost correct. Harmonics are the multiples of the base frequency. In harmonic oscillator both $1\leftarrow 0$ and $2\leftarrow 1$ transitions have the same frequency $\omega$, whereas the frequency of $2\leftarrow 0$ transition is $2\omega$.

Improve this answer
$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.