Hyperfine and Zeeman measurements in the infrared spectrum of doubly charged molecule D35 C12+

An experimental investigation of the X3Σ- ground electronic state of the doubly charged molecule D35Cl2+ was performed using the Fast-lon-Beam/Laser-Beam-Spectrometer (FIBLBS), with a CO2 infrared laser acting as the source of exciting radiation. Hyperfine resolved transitions between the ν=1→2 vibrational bands were observed for D35Cl2+. The observed spectrum was analysed for transition frequencies, linewidths and relative signal intensities. A solenoid was designed, built and incorporated into the FIBLBS for the inducement of Zeeman splitting in the hyperfine structure of D35Cl2+. The solenoid was used to investigate the splitting of a P branch hyperfine quartet over a variety of magnetic fields and was subsequently assigned unambiguously as a PQ23(6) transition, with F quantum numbers 7/2, 9/2, 11/2 and 13/2