Fig. 5: Boltzmann plot to estimate band-specific rotational temperatures.
From: Dual-comb spectroscopy of ammonia formation in non-thermal plasmas
Rotational temperatures, \({T}_{{{{{{\rm{rot}}}}}}}\), were estimated for three rovibrational bands of NH3, including the ν2 ← ν0 fundamental band (black dots), the 2ν2 ← ν2 hot band (black squares), and the ν4+ν2 ← ν4 hot band (black diamonds). Linear fits are also shown (red lines). Two data sets for each vibrational band are presented, each of which was collected at \({\phi }_{{{{{{{\rm{H}}}}}}}_{2}}\) = 0.6 and recorded on successive days. Error bars represent 1σ fit precision in the area of the line profile (type-A evaluation only).
