Hyperfine Structure in the Rotational Spectrum of CuBr

Abstract

The hyperfine structure of the J = 2 ← 1 rotational transition of CuBr has been measured in the 12 GHz frequency region using a Stark modulated high temperature microwave spectrometer. The molecules were produced by the reaction of Br2 vapour with copper in the heated zone of a splitted wave guide at a temperature of 800 °C. The analysis of the hyperfine structure yielded the following quadrupole coupling constants