RFM Flags

VVW Flag: Apply Van Vleck-Weisskopf Correction to Lineshapes

25AUG17

Enabled
Apply VVW correction term to line-by-line calculations (unless already calculated using VVW lineshape - see *SHP section)

Disabled
Normal lineshapes

Restrictions
None.

Notes
  1. The Van Vleck Weisskopf lineshape is generally recommended for calculations in the microwave region (ν <100 cm-1).
  2. The specific Van Vleck Weisskopf lineshape, as specified in the *SHP section, is a more accurate theoretical version of the Lorentzian lineshape for this region but if Doppler broadening is also likely to be significant it is better to apply the VVW correction to the Voigt lineshape using the VVW Flag than force the full VVW shape to be used throughout.

Bugs
Bug#59 (Fixed v4.26)
Bug#53 (Fixed v4.26)