Millimeter-Wave Rotational Spectrum of NO in theπ322State

Abstract

The $J=\frac{3}{2}\to \frac{5}{2}$ rotational transition of NO in the ${}_{}{}^2{}_{}{}^{}\pi _{\frac{3}{2}}^{}{}_{}{}^{}$ electronic state has been measured in the 1.17 mm wave region. Theory applied to these measurements combined with previous measurements on transitions of the ground ${}_{}{}^2{}_{}{}^{}\pi _{\frac{1}{2}}^{}{}_{}{}^{}$ state lead to the following values for the characteristic constants of ${\mathrm{N}}^{14}$ ${\mathrm{O}}^{16}$: The rotational constant, $B_0=50\mathrm{}848.42$ Mc/sec, and the spin orbit coupling constant $A=122.1\mathrm{}$ ${\mathrm{cm}}^{-1\mathrm{}}$. The ${\mathrm{N}}^{14}$ nuclear magnetic couplings $a=83.82\mathrm{}$ Mc/sec, $b=68.49\mathrm{}$ Mc/sec, $c=-86.34\mathrm{}$ Mc/sec, and the ${\mathrm{N}}^{14}$ nuclear quadrupole couplings $\mathrm{eQ}{q}_1=-2\mathrm{}$ Mc/sec, $\mathrm{eQ}{q}_2=22\mathrm{}$ Mc/sec. The $\Lambda$-doubling constants $p_{\Lambda }=175.15\mathrm{}$ Mc/sec, $q_{\Lambda }=1.15\mathrm{}$ Mc/sec.