Microwave Spectrum ofN14O16

Abstract

The $J=\frac{1}{2}\ensuremath{\rightarrow}\frac{3}{2}$ ($v=0$) rotational transition of the $^{2}\ensuremath{\pi}_{\frac{1}{2}}$ state of ${\mathrm{N}}^{14}$${\mathrm{O}}^{16}$ has been measured. This transition occurs at 150 372.30 Mc/sec and is split into two groups of five lines due to $\ensuremath{\Lambda}$-type doubling and a large magnetic hyperfine interaction. The value of ${B}_{0}$ is found to be 1.69510 ${\mathrm{cm}}^{\ensuremath{-}1}$ and ${r}_{0}=1.1539\mathrm{A}$. The $\ensuremath{\Lambda}$-doubling constant $p$ is determined as 355.2 Mc/sec, and a spin of 1 is again confirmed for ${\mathrm{N}}^{14}$. A preliminary analysis of the magnetic hyperfine structure is given, based on the interaction Hamiltonian $a{I}_{{z}^{\ensuremath{'}}}{L}_{{z}^{\ensuremath{'}}}+b\mathrm{I}\ifmmode\cdot\else\textperiodcentered\fi{}\mathrm{S}+c{I}_{{z}^{\ensuremath{'}}}{S}_{{z}^{\ensuremath{'}}}$, where $a$, $b$, and $c$ are constants.