The A2Π u ← X2Σ g+ system of N 2+: The (3, 6) band of 14N 15N + and further measurements of the (2, 5) band of 14N 14N +
The A2Π u ← X2Σ g+ system for two isotopomers of N 2+ has been observed near 2200 cm -1 using a velocity modulation diode laser spectrometer. For 14N 15N + and 14N 14N + the (3, 6) and (2, 5) bands have been measured, respectively. A static ac glow discharge has been used for the 14N 15N + studies. For the mixed isotopomer, these are the first measurements of the A- X system. For the normal isotopomer, the measurements extend previous observations. Spectroscopic constants for the A and X states of both isotopomers have been evaluated; they are compared with previous values for 14N 14N +, and with values estimated for 14N 15N + by isotopic scaling from the normal isotopomer.