Accession Number:

AD0811582

Title:

ION CHEMISTRY.

Descriptive Note:

Annual summary rept. 1 Nov 65-31 Oct 66,

Corporate Author:

KANSAS UNIV LAWRENCE DEPT OF CHEMISTRY

Report Date:

1966-11-30

Pagination or Media Count:

92.0

Abstract:

The paramagnetic relaxation characteristics of trapped electrons and hydrogen atoms in gamma-irradiated alkaline and acid ices respectively were studied by power saturation methods. The relaxation times were measured as a function of radiation dose, deuteration, phase and temperature. Line widths were measured under various conditions. The trapped electron EPR line is inhomogeneously broadened by nuclear hyperfine interactions the spin-lattice relaxation mechanism is a cross relaxation process with 0-. The electrons are trapped with a nonuniform spatial distribution in hydroxyl anion vacancies in radiation-produced spurs of 25 A radius. The trapped hydrogen atom EPR line is inhomogeneously broadened by nuclear hyperfine interactions and homogeneously broadened probably by dipolar spin-spin interactions the spin-lattice relaxation mechanism is probably phonon modulation of the dipolar spin-spin interaction. The H atoms are trapped with spatial uniformity at interstitial sites near oxyanions. t-C4H9 reactions in liquid isobutene were also studied. An experimental technique for generating ions in the vapor by photoionization and then injecting them into a liquid with an electric field is described. A study of the C8 products showed that olefins predominate. Proton transfer is the important termination step for the t-C4H9 reactions but hydride transfer also occurs. Author

Subject Categories:

  • Radiation and Nuclear Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE