J=3,K=2Line in the Inversion Spectrum ofN14H3

Abstract

The coupling scheme used by Gunther-Mohr to study the hyperfine structure in the spectrum of ${\mathrm{N}}^{14}$ ${\mathrm{H}}_3$ breaks down when there is no first-order quadrupole splitting, i.e., for $J=3\mathrm{}$, $K=2\mathrm{}$. This occurs because to neglect matrix elements off-diagonal in $F_1$ it is necessary to have a quadrupole splitting considerably larger than the other interactions being considered. This special case is treated here by including the elements off-diagonal in $F_1$. The energy splittings, frequencies, and relative intensities are found. The numerical constants used in the evaluation are taken from the work of Gordon. It should be possible to observe the details of this line with the maser.