title: Rotational Spectrum of the Excited Vibrational States of DCOOH and Assignment of Optically Pumped Laser Transitions
abstract: The rotational spectrum of DCOOH in the 175-335 GHz region was investigated. Analysis of the spectrum made it possible to assign several dozen transitions in the nu6, nu8, and nu5 vibrational states and to determine the rotational and centrifugal distortion constants. The derived parameters of the nu6 state allowed four optically pumped laser transitions to be assigned. In addition, the ground state parameters for DCOOH and D13COOH have been improved and for the first time those for DC18OOH and DCO18OH have been obtained.
authors.affiliation: Faculty of Quantum Radiophysics, Kharkov State University, Svobody Sq. 4, Kharkov, 310077, Ukraine
authors.initials: OI
authors.lastname: Baskakov