Magnetic Hyperfine Spectrum of H2CO by a Maser

摘要: The magnetic hyperfine structure in J =3, K -1 =1, Δ =0 transition of formaldehyde at 29 Gc/sec was studied by a beam type maser spectrometer. components corresponding to F transitions were observed with good signal-to-noise ratio. splittings are measured as 23.0 kc/sec and 10.4 which compared theory. As well the I · coupling, spin-spin interaction term 1 2 between two protons is fairly large cannot be neglected. Coupling constants determined µ N g H r -3 =19.9 \(\sum\limits_{g}\langle{J_{g}}^{2}\rangle(A_{1g}+A_{2g}){=}54.6\) kc/sec.