{"title":"水分子氢的放射性分解前体的性质，以及液体中正电子的形成机制","authors":"V.M. Byakov","doi":"10.1016/0020-7055(76)90071-1","DOIUrl":null,"url":null,"abstract":"<div><p>The dependence of H<sub>2</sub> yields on the concentration of certain solutes indicates that molecular hydrogen is formed via recombination of its precursors in spurs. The order of efficiency of solutes in decreasing the formation of H<sub>2</sub> does not correlate with the rate constants of their reactions with e<sub>aq</sub><sup>−</sup> or H.</p><p>Due to their diffusive motion at energies ⩽10<sup>2</sup>eV and to their comparatively long lifetimes in the subvibrational energy range at the end of their tracks, positrons may form positronium by a reaction with (epi) thermal electrons. The order of the reactivity of solutes towards the precursors of positronium is the same as that towards precursors of the molecular hydrogen yield and is in agreement with the order of their relative rate constants towards the non-solvated electron.</p><p>It seems that the non-solvated electron takes part in the formation of positronium and of radiolytic H<sub>2</sub>.</p></div>","PeriodicalId":100688,"journal":{"name":"International Journal for Radiation Physics and Chemistry","volume":"8 3","pages":"Pages 283-288"},"PeriodicalIF":0.0000,"publicationDate":"1976-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-7055(76)90071-1","citationCount":"36","resultStr":"{\"title\":\"The nature of the precursors of radiolytic molecular hydrogen in water, and the mechanism of positronium formation in liquids\",\"authors\":\"V.M. Byakov\",\"doi\":\"10.1016/0020-7055(76)90071-1\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The dependence of H<sub>2</sub> yields on the concentration of certain solutes indicates that molecular hydrogen is formed via recombination of its precursors in spurs. The order of efficiency of solutes in decreasing the formation of H<sub>2</sub> does not correlate with the rate constants of their reactions with e<sub>aq</sub><sup>−</sup> or H.</p><p>Due to their diffusive motion at energies ⩽10<sup>2</sup>eV and to their comparatively long lifetimes in the subvibrational energy range at the end of their tracks, positrons may form positronium by a reaction with (epi) thermal electrons. The order of the reactivity of solutes towards the precursors of positronium is the same as that towards precursors of the molecular hydrogen yield and is in agreement with the order of their relative rate constants towards the non-solvated electron.</p><p>It seems that the non-solvated electron takes part in the formation of positronium and of radiolytic H<sub>2</sub>.</p></div>\",\"PeriodicalId\":100688,\"journal\":{\"name\":\"International Journal for Radiation Physics and Chemistry\",\"volume\":\"8 3\",\"pages\":\"Pages 283-288\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1976-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0020-7055(76)90071-1\",\"citationCount\":\"36\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal for Radiation Physics and Chemistry\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0020705576900711\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal for Radiation Physics and Chemistry","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0020705576900711","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
The nature of the precursors of radiolytic molecular hydrogen in water, and the mechanism of positronium formation in liquids
The dependence of H2 yields on the concentration of certain solutes indicates that molecular hydrogen is formed via recombination of its precursors in spurs. The order of efficiency of solutes in decreasing the formation of H2 does not correlate with the rate constants of their reactions with eaq− or H.
Due to their diffusive motion at energies ⩽102eV and to their comparatively long lifetimes in the subvibrational energy range at the end of their tracks, positrons may form positronium by a reaction with (epi) thermal electrons. The order of the reactivity of solutes towards the precursors of positronium is the same as that towards precursors of the molecular hydrogen yield and is in agreement with the order of their relative rate constants towards the non-solvated electron.
It seems that the non-solvated electron takes part in the formation of positronium and of radiolytic H2.
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