Microwave electrichyphen;resonance optothermal spectroscopy of (H2O)2

摘要

The microwave spectrum of (H2O)2has been measured between 14 and 110 GHz using a newly developed electrichyphen;resonance optothermal spectrometer (EROS) described here. The reported measurements extend previous results on theahyphen;typeKa=0ndash;0 and 1ndash;1 bands for theAplusmn;2,Bplusmn;2, andEplusmn;rotationalhyphen;tunneling states and include the first observations of thechyphen;typeKa=1ndash;0 band for theAplusmn;2andBplusmn;2states and theahyphen;typeKa=0ndash;0 band for theAplusmn;1states. For theAplusmn;1states an interconversion tunneling splitting of 22.6 GHz is obtained, compared to the 19.5 GHz value found previously for theKa=0Aplusmn;2andBplusmn;2states.