Stark Spectroscopy of 15NH3 ν2 Band by 10-μ Lasers

Abstract

Ninety‐five coincidences between ¹⁵NH₃ ν₂‐band lines with $\text{J\hspace{0.17em}≤\hspace{0.17em}7}$ and CO₂ and N₂O laser lines are obtained by Stark tuning of NH₃ lines. Accurate relative positions between NH₃ and laser lines are calculated for these coincidences. Further, the molecular constants related to the ${\nu }_2$ band are determined using the wavelengths of the laser lines as standard.