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EFFECTIVE HYPERFINE-STRUCTURE FUNCTIONS OF AMMONIA

Publikace na Matematicko-fyzikální fakulta |
2016

Tento text není v aktuálním jazyce dostupný. Zobrazuje se verze "en".Abstrakt

The hyperfine structure of the rotation-inversion (nu(2) = 0(+), 0(-), 1(+), 1(-)) states of the (NH3)-N-14 and (NH3)-N-15 ammonia isotopomers is rationalized in terms of effective (ro-inversional) hyperfine-structure (hfs) functions. These are determined by fitting to available experimental data using the Hougen's effective hyperfine-structure Hamiltonian within the framework of the non-rigid inverter theory.

Involving only a moderate number of mass independent fitting parameters, the fitted hfs functions provide a fairly close reproduction of a large majority of available experimental data, thus evidencing adequacy of these functions for reliable prediction. In future experiments, this may help us derive spectroscopic constants of observed inversion and rotation-inversion transitions deperturbed from hyperfine effects.

The deperturbed band centers of ammonia come to the forefront of fundamental physics especially as the probes of a variable proton-to-electron mass ratio.