Knowledge Bank

Rovibrational spectra of the vibrational fundamental of nitric oxide have been recorded at $0.006cm-1$ resolution using the Solar McMath FTS at the Kitt Peak National Observatory. From these data, line positions, intensities, $N2$-broadened line widths and $N2$-induced pressure shifts have been measured thru $|m=22.5$. For intensities, the first-order Herman-Wallis line intensity constant is in very good agreement with the value predicted by the formulation of Tipping and Ogilvie [J. Mol. Spectrosc. 96, 442 (1982)]. The $N2$-induced frequency shifts range from -0.001 to $-0.002cm-1$/atm at room temperature. Finally, we discuss the effect on the retrieved broadening parameters of the hyperfine splittings in the e and f components of the $\lambda$ doublets.