Crystal field theory analysis of rovibrational spectra of carbon monoxidemonomers isolated in solid parahydrogen

摘要

We report the first rotationally resolved and completely assigned rovibrational spectrum for anonhydride molecule rotating in the solid phase: carbon monoxide (CO) monomers isolated incryogenic solid parahydrogen (p-H_2).We employ a modified crystal field theory model, in which theCO molecular spectroscopic constants are taken as adjustable parameters, to make goodspectroscopic assignments for all the observed features. We discuss the limitations of this approachand highlight the need for improved theoretical models of molecular rotation dynamics in quantumsolids.