Stark Effect at 2.0 and 1.2 Millimeters Wavelength: Nitric Oxide

Abstract

Stark-effect measurements have been made for the first time in the 1-2 mm wave region. Results of Stark-effect measurements on the $J=\frac{1}{2}\to \frac{3}{2}$ and $J=\frac{3}{2}\to \frac{5}{2}$ transitions of the ${}_{}{}^2{}_{}{}^{}\mathrm{II}_{\mathrm{½}}^{}{}_{}{}^{}$ ground state of ${\mathrm{N}}^{14}$ ${\mathrm{O}}^{16}$, falling at 2.0 and 1.2 mm, respectively, are reported, and are shown to fit closely existing theory; the electric dipole moment of NO in the ground state is found to be 0.158±0.006 Debye unit.