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

Ninety‐five coincidences between 15NH3 ν2‐band lines with J ≤ 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 ν2 band are determined using the wavelengths of the laser lines as standard.