How do rotational and vibrational energies in molecules depend on masses?

  • Thread starter meteor84
  • Start date
  • #1
6
0

Main Question or Discussion Point

Hi!

I'm wondering what the effects of a variable mass of elementary particles on the rotational and vibrational energy-transitions would be like? Would they increase, decrease or stay the same?

Thank you for your help!

Regards
 

Answers and Replies

  • #2
DrDu
Science Advisor
6,032
759
See:

http://www.ulb.ac.be/cpm/people/scientists/bsutclif/bornop.pdf [Broken]
 
Last edited by a moderator:
  • #3
cgk
Science Advisor
521
42
On a related note: What to do with the electron masses is not actually so clear. In principle they should be handled by the BO expansion and vibrational spectra should be calculated using bare masses. But in approximate treatments they are often included, because this seems to work better (note: this has an effect of <2 cm^{-1} in most cases).

See http://dx.doi.org/10.1080/00268970701604671 for a deeper discussion of this topic.
 
  • #4
DrDu
Science Advisor
6,032
759

Related Threads on How do rotational and vibrational energies in molecules depend on masses?

Replies
4
Views
3K
  • Last Post
Replies
12
Views
659
  • Last Post
Replies
1
Views
444
  • Last Post
Replies
2
Views
3K
  • Last Post
Replies
9
Views
4K
Replies
2
Views
1K
Replies
1
Views
2K
Replies
1
Views
751
Replies
12
Views
17K
Replies
3
Views
858
Top