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Title: Kinetics of spur reactions of electrons in ethylene glycol-water glassy ice, a pulse radiolytic study

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$supmore » -$/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)« less

Authors:
;
Publication Date:
Research Org.:
Hebrew Univ., Jerusalem
Sponsoring Org.:
USDOE
OSTI Identifier:
4142706
NSA Number:
NSA-33-008918
Resource Type:
Journal Article
Journal Name:
Journal of Physical Chemistry
Additional Journal Information:
Journal Volume: 79; Journal Issue: 24; Other Information: Orig. Receipt Date: 30-JUN-76; Journal ID: ISSN 0022-3654
Country of Publication:
United States
Language:
English
Subject:
N40300* -Chemistry-Radiation Chemistry; 400600* -Chemistry-Radiation Chemistry; *GLYCOLS- RADIOLYSIS; *WATER- RADIOLYSIS; CADMIUM COMPOUNDS; CATIONS; DECAY; ELECTRON BEAMS; ICE; LOW TEMPERATURE; PULSED IRRADIATION; TRAPPED ELECTRONS

Citation Formats

Barkatt, Aaron, and Rabani, Joseph. Kinetics of spur reactions of electrons in ethylene glycol-water glassy ice, a pulse radiolytic study. United States: N. p., 1975. Web. doi:10.1021/j100591a004.
Barkatt, Aaron, & Rabani, Joseph. Kinetics of spur reactions of electrons in ethylene glycol-water glassy ice, a pulse radiolytic study. United States. doi:10.1021/j100591a004.
Barkatt, Aaron, and Rabani, Joseph. Sat . "Kinetics of spur reactions of electrons in ethylene glycol-water glassy ice, a pulse radiolytic study". United States. doi:10.1021/j100591a004.
@article{osti_4142706,
title = {Kinetics of spur reactions of electrons in ethylene glycol-water glassy ice, a pulse radiolytic study},
author = {Barkatt, Aaron and Rabani, Joseph},
abstractNote = {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)},
doi = {10.1021/j100591a004},
journal = {Journal of Physical Chemistry},
issn = {0022-3654},
number = 24,
volume = 79,
place = {United States},
year = {1975},
month = {11}
}