Accession Number : AD0636687

Title :   THE PHOTOLYSIS OF LIQUID WATER AT 1470A.

Descriptive Note : Interim scientific rept. no. 2.

Corporate Author : HEBREW UNIV JERUSALEM (ISRAEL) DEPT OF PHYSICAL CHEMISTRY

Personal Author(s) : Sokolov, Uriel ; Stein,Gabriel

Report Date : 10 AUG 1965

Pagination or Media Count : 22

Abstract : The photolysis of water and of dilute aqueous solutions of O2, methanol ethanol and isopropanol was studied at 1470A. The results are consistent with the reaction scheme: H2O = H2O* to (H+OH) to H2O. The limiting quantum yield for the formation of the geminate radical pair is 0.7 plus or minus 0.1 at room temperature. Scavengers compete in an inhomogeneous kinetics with geminate recombination. The direct formation of molecular products other than by radical mechanisms is excluded. Results on D2O solutions of ethanol support the conclusions. The evidence does not favour direct interaction of scavengers with the excited water molecules H2O*. (Author)

Descriptors :   (*OXYGEN, *PHOTOCHEMICAL REACTIONS), (*WATER, PHOTOLYSIS), ULTRAVIOLET RADIATION, CARBINOLS, ETHANOLS, QUANTUM STATISTICS, REACTION KINETICS, HEAVY WATER, ISRAEL

Subject Categories : Radiation and Nuclear Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE