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Author Barkatt, Aaron ♦ Rabani, Joseph
Sponsorship USDOE
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword Chemistry-Radiation Chemistry ♦ GLYCOLS- RADIOLYSIS ♦ WATER- RADIOLYSIS ♦ CADMIUM COMPOUNDS ♦ CATIONS ♦ DECAY ♦ ELECTRON BEAMS ♦ ICE ♦ LOW TEMPERATURE ♦ PULSED IRRADIATION ♦ TRAPPED ELECTRONS
Abstract Ethylene glycol--water glasses were pulse irradiated at 173$sup 0$K. It was found that Cd$sup 2+$ ions react with both trapped electrons (e$sup -$/sub t/ , k = (2.5 +- 1) x 10$sup 5$ M$sup -1$ sec$sup -1$) and with their precursors (k greater than 10$sup 9$ M$sup -1$ sec$sup -1$). Cd$sup 2+$ ions which react with e$sup -$/sub t/ produce Cd$sup +$ ions in the bulk of the glasses. This is demonstrated by the subsequent second-order decay of Cd$sup +$. Cd$sup 2+$ ions which react with the precursors of e$sup -$/sub t/ produce Cd$sup +$ ions in the spurs. Such Cd$sup +$ ions decay away later by a process which is in agreement with the model of Schuler and coworkers. The fraction of Cd$sup +$ ions which is produced in the spurs increases with [Cd$sup 2+$] in accordance with the competition scheme e$sup -$/sub m/ $Yields$ e$sup -$/sub t/, Cd$sup 2+$ + e$sup - $/sub m/ $Yields$ Cd$sup +$ where e$sup -$/sub m/ represents a precursor of e$sup -$/sub t/. From the effect of [Cd$sup 2+$] on the initial e$sup -$/sub t/ and Cd$sup +$ absorptions, it was found that k(e$sup -$/sub m/ $Yields$ e$sup -$/sub t/)/k(Cd$sup 2+$ + e$sup -$/sub m/) = (0.24 +- 0.02) M. Results are also reported for the recombination of Cd$sup +$ and the molar absorptivities of Cd$sup +$ and similar cations in aqueous solution. (auth)
ISSN 00223654
Educational Use Research
Learning Resource Type Article
Publisher Date 1975-11-01
Publisher Department Hebrew Univ., Jerusalem
Publisher Place United States
Journal Journal of Physical Chemistry
Volume Number 79
Issue Number 24
Organization Hebrew Univ., Jerusalem


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