The v = 1 ← 0 quadrupole spectrum of N2

Abstract Transitions in the O and S branches of the v = 1 ← 0 band of molecular 14 N 2 have been recorded in the laboratory using the 1-m Fourier transform spectrometer located at Kitt Peak. Analysis of the line position data has led to improved values for the Dunham coefficients of N 2 . Furthermore, an analysis of the linewidths and peak heights have yielded values of γ L = (0.0345 ± 0.0029) cm −1 /atm for the self-broadening coefficient of N 2 and ( ∂Q ∂r )r e = (0.933 ± 0.039)ea 0 for the derivative of the molecular quadrupole moment.