Atomic hydrogen in ?-irradiated hydroxides of alkaline-earth elements

Autor: Vikt I. Spitsyn, T. K. Yurik, L. I. Barsova
Rok vydání: 1982
Předmět:
Zdroj: Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 31:672-677
ISSN: 1573-9171
0568-5230
DOI: 10.1007/bf00949995
Popis: Atomic hydrogen is an important intermediate product formed in the radiolysis of compounds containing X-H bonds. H atoms have been detected in irradiated matrices of H/sub 2/ and inert gases at 4/sup 0/K, in irradiated ice and frozen solutions of acids in irradiated salts and in other systems. Here results are presented from a study of the ESR spectra of H atoms generated in polycrystalline hydroxides of alkaline-earth elements that have been ..gamma..-irradiated at 77/sup 0/K, after preliminary treatment at various temperatures. For the first time stabilization of atomic hydrogen in ..gamma..-irradiated polycrystalline alkaline-earth element hydroxides has been detected. Depending on the degree of dehydroxylation, several types of hydrogen atoms may be stabilized in the hydroxides, these hydrogen atoms having different radiospectroscopic parameters. In the magnesium-calcium-strontium-barium hydroxide series, a regular decrease has been found in the hfi constants for H atoms with the cations in the immediate surroundings. A direct proportionality has been found between the parameters ..delta..A/A/sub 0/ and the polarizability of the cation.
Databáze: OpenAIRE
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