Knowledge Bank

The dissociation processes of $HF/DF+h\nu \to H+/D++F-$ and $(HF)2+h\nu \to HFH++F-$ have been studied through single photon excitation with coherent vacuum ultraviolet light. For HF and DF, the laser was scanned around the ion-pair dissociation energies. The spectra demonstrate that the ion-pair production could be greatly enhanced through the coupling between the ion-pair states and the Rydberg states converging to certain levels of $HF+/DF+$. The results from our current high resolution study lead to different conclusions than those resulting from lower resolution synchrotron $experimentsa$. For the ion-pair production of $(HF)2$, some preliminary results and possible explanations will be presented.