Hot band

to get instant updates about 'Hot Band' on your MyPage. Meet other similar minded people. Its Free!


All Updates

In molecular vibrational spectroscopy, a hot band (or hot transition) is a transition between two states of a single normal mode of vibration, neither of which is the overall ground state. In infrared or Raman spectroscopy, hot bands refer to those transitions for a particular vibrational mode which arise from a state containing thermal population of another vibrational mode. For example, for a molecule with 3 normal modes, <math>nu_1</math>, <math>nu_2</math> and <math>nu_3</math>, the transition <math>101</math> ← <math> 001</math>, would be a hot band, since the initial state has one quantum of excitation in the <math>nu_3</math> mode. Hot bands are distinct from combination band, which involve simultaneous excitation of multiple normal modes with a single photon, and overtones, which are transitions that involve changing the vibrational quantum number for a normal mode by more than 1.

Vibrational hot bands

In the harmonic approximation, the normal modes of a molecule are not coupled, and all vibrational quantum levels are equally spaced, so hot bands would not be distinguishable from so-called "fundamental" transitions arising from the overall vibrational ground state. However, vibrations of real molecules always have some anharmonicity, which causes coupling between...
Read More

No feeds found

Posting your question. Please wait!...

No updates available.
No messages found
Suggested Pages
Tell your friends >
about this page
 Create a new Page
for companies, colleges, celebrities or anything you like.Get updates on MyPage.
Create a new Page
 Find your friends
  Find friends on MyPage from