论文信息 - Reinterpretation of Molecular Beam Hyperfine Data for 14NH3 and 15NH3

Reinterpretation of Molecular Beam Hyperfine Data for 14NH3 and 15NH3

Reassignments are presented for the hyperfine patterns of six 15NH3 inversion doublets. The new assignments alter the sign of the nitrogen‐hydrogen spin‐spin interaction constant. Previous disagreement between theory and experiment for the hyperfine pattern of the J = 3, K = 2 14NH3 inversion doublet is removed by including the effect of centrifugal distortion on the quadrupole splitting. An explanation is presented for a discrepancy remaining in the fit of the J = K = 6 hyperfine pattern of 15NH3.

Jon T. Hougen | J. T. Hougen | J. Hougen

[1] P. B. Davies,et al. Radio‐Frequency Spectrum of Phosphine (PH3) , 1971 .

[2] T. Oka. Vibration—Rotation Interaction in Symmetric‐Top Molecules and the Splitting between A1 and A2 Levels , 1967 .

[3] E. B. Wilson,et al. Theory of Centrifugal Distortion Constants of Polyatomic Rotor Molecules , 1953 .

[4] Robert S. Mulliken,et al. Report on Notation for the Spectra of Polyatomic Molecules , 1955 .

[5] J. Watson. Simplification of the molecular vibration-rotation hamiltonian , 2002 .

[6] S. Wofsy,et al. 14NH3 Hyperfine Structure and Quadrupole Coupling , 1970 .

[7] S. Kukolich. Measurement of ammonia hyperfine structure with a two-cavity maser , 1967 .

[8] E. K. Plyler,et al. VIBRATION–ROTATION BANDS OF AMMONIA: II. THE MOLECULAR DIMENSIONS AND HARMONIC FREQUENCIES OF AMMONIA AND DEUTERATED AMMONIA , 1957 .