Abstract book - Prof. Per Jensen, Ph.D. - Bergische Universität ...

174 Poster session, J11Measurement of hyperfine structure and permanent electric dipolemoments in the electronic spectrum of iridium monohydride andmonodeuterideC. Linton 1 , A. D. Granger 1 , A. G. Adam 1 , S. E. Frey 2 , A. Le 2 , T. C. Steimle 21 University of New Brunswick, Canada, colinton@unb.ca2 Arizona State University, USA, tsteimle@asu.eduLinton C.Granger A.D.Adam A.G.Frey S.E.Le A.Steimle T.C.High resolution spectra of 3 Φ 4 - X 3 Φ 4 transitions of IrH and IrD were obtained using thelaser ablation spectrometer at Arizona State University. With linewidths lower than 50MHz, hyperfine structure due to the nuclear spin (I = 3/2) of both iridium isotopes 193 Irand 191 Ir was resolved. Using the optical Stark effect, which examined the tuningproperties of the hyperfine lines when an external electric field was applied, permanentdipole moments were determined for both electronic states. The interpretation of thehyperfine parameters and dipole moments in terms of the insights they provide into theelectron configurations of the two electronic states will be discussed and the results willbe compared with isovalent molecules , CoH and RhH, in the same group.