Time-resolved effects of an electric field in recombination fluorescence
- Institute of Chemical Kinetics and Combustion, Novosibirsk (Russian Federation)
Quenching of the recombination fluorescence by an external electric field was investigated in hexane, tetradecane, and aqualane solutions of p-terphenyl and 2.5-diphenyloxazole irradiated with X-rays. The kinetics of the recombination fluorescence I(E,t) was measured in a nanosecond time scale and the quenching-efficiency curves Q(E,t) = 1 - I(E,t)/I(0,t) were plotted. The dependence Q(E,t) was shown to have the specific character Q(E,t) = f(pt), where p = AE{sup 2}D/r{sub c}{sup 2}. Here A is a constant dependent on the initial-distance distribution function of the charges, E is the electric field strength, D is a mutual diffusion coefficient of the recombining ions, and r{sub c} is the Onsager radius. The quadratic dependence of the parameter p on the electric field strength was shown to be a consequence of the diffusion-controlled reaction of ion recombination.
- OSTI ID:
- 171740
- Journal Information:
- High Energy Chemistry, Vol. 29, Issue 6; Other Information: PBD: Dec 1995; TN: Translated from Khimiya Vysokikh Energii; 29: No. 6, 434-439(1995)
- Country of Publication:
- United States
- Language:
- English
Similar Records
Photoexcited charge pair escape and recombination. Progress report, July 1, 1983-February 28, 1984
Electron mobilities, free ion yields, and electron thermalization distances in liquid long-chain hydrocarbons