Shock-induced electromotive force in aqueous solution of potassium fluoride

Shock-induced electromotive forces (emf) were measured in water and water-p otassium fluoride solutions with concentrations of KF ranging from 2 x 10(- 7) to 2 x 10(-2) mole fraction. The emf was positive and increased with inc reasing shock pressure and concentration of potassium fluoride for concentr ations below 2 x 10(-4). The increment of shock-induced polarization was pr oportional to cube root of concentration. For the dense solutions above 2 x 10(-3), on the contrary, the polarity of the emf changed to negative.