radis.db.degeneracies moduleĀ¶
Created on Sat Oct 28 18:47:39 2017.
@author: erwan
State-dependant and state-independent degeneracies for molecules
- gi(M, I)[source]Ā¶
State independent degeneracy.
- Parameters:
M (int) ā molecule id
I (int) ā isotope number
References
Å imeÄkovĆ” 2006: āEinstein A-coefficients and statistical weights for molecular absorption transitions in the HITRAN databaseā. DOI 10.1016/j.jqsrt.2005.07.003
- gs(M, I)[source]Ā¶
State dependant degeneracy.
- Parameters:
M (int) ā molecule id
I (int) ā isotope number
References
Å imeÄkovĆ” 2006: āEinstein A-coefficients and statistical weights for molecular absorption transitions in the HITRAN databaseā. DOI 10.1016/j.jqsrt.2005.07.003
CO2:
For the 12C16O2, 13C16O2, 12C18O2 isotopologues, the statistical weights gs of the symmetric s and antisymmetric a rotational levels are 1 and 0, respectively (see Fig. 99 of Ref. [24], Fig. 17-6 of Ref. [26]). For the 16O12C18O, 16O12C17O, 16O13C18O, 16O13C17O, 17O12C18O isotopologues, the statistical weights gs of all the rotational levels are 1"