부산대학교 도서관

Possible ion pair formation in highly concentrated aqueous potassium halide solutions (fluoride,chloride, and bromide) has been investigated by applied Auger electron spectroscopy. The potassiumAuger spectra exhibit features at high kinetic energy, which are related to final states withvacancies on the potassium ion and a neighboring water molecule. The potassium ion could possiblyassociate with a halide ion as well, giving rise to additional final states with a vacancy onthe halide instead of a water molecule which should give rise to separable spectral features. Thenecessity of close proximity of the ions for such decays to occur would be strong evidence thatcontact ions pairs are present in the solution, but no features related to final states involving theanion could be observed in this work.