{"title":"77 K时非极性二元混合物等温发光的衰减动力学","authors":"A. Płonka, J. Mayer, W. Lefik, J. Kroh","doi":"10.1016/0146-5724(85)90103-7","DOIUrl":null,"url":null,"abstract":"<div><p>The isothermal luminescence of γ-irradiated frozen 3-methylpentane (3MP)-methylcyclohexane (MCH) mixtures (3MP mole fraction from 0 to 0.96) containing naphthalene (Nph) was investigated at 77K. At high Nph concentration (2.5 <em>x</em> 10<sup>−2</sup>mol dm<sup>−>3</sup>) the luminescence is due to molecular ion recombination by tunnelling. In the soft glass (0.96 mole fraction 3MP) at low Nph concentration (10<sup>-3</sup> mol dm<sup>-3</sup>) electron thermal detrapping seems to contribute to the emission. The experimental decay curves were interpreted based on the Bagdasar'yan relation as well as the continuous-time- random-walk formalism (assuming a first-order rate equation with a time dependent rate constant of the form <em>k</em>(<em>t</em>) = <em>B</em><em>t</em><sup>(<em>α</em>−1)</sup>.</p></div>","PeriodicalId":101054,"journal":{"name":"Radiation Physics and Chemistry (1977)","volume":"26 6","pages":"Pages 657-662"},"PeriodicalIF":0.0000,"publicationDate":"1985-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0146-5724(85)90103-7","citationCount":"5","resultStr":"{\"title\":\"Decay kinetics of the isothermal luminescence in nonpolar binary mixtures at 77 K\",\"authors\":\"A. Płonka, J. Mayer, W. Lefik, J. Kroh\",\"doi\":\"10.1016/0146-5724(85)90103-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The isothermal luminescence of γ-irradiated frozen 3-methylpentane (3MP)-methylcyclohexane (MCH) mixtures (3MP mole fraction from 0 to 0.96) containing naphthalene (Nph) was investigated at 77K. At high Nph concentration (2.5 <em>x</em> 10<sup>−2</sup>mol dm<sup>−>3</sup>) the luminescence is due to molecular ion recombination by tunnelling. In the soft glass (0.96 mole fraction 3MP) at low Nph concentration (10<sup>-3</sup> mol dm<sup>-3</sup>) electron thermal detrapping seems to contribute to the emission. The experimental decay curves were interpreted based on the Bagdasar'yan relation as well as the continuous-time- random-walk formalism (assuming a first-order rate equation with a time dependent rate constant of the form <em>k</em>(<em>t</em>) = <em>B</em><em>t</em><sup>(<em>α</em>−1)</sup>.</p></div>\",\"PeriodicalId\":101054,\"journal\":{\"name\":\"Radiation Physics and Chemistry (1977)\",\"volume\":\"26 6\",\"pages\":\"Pages 657-662\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1985-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0146-5724(85)90103-7\",\"citationCount\":\"5\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Radiation Physics and Chemistry (1977)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0146572485901037\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Radiation Physics and Chemistry (1977)","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0146572485901037","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Decay kinetics of the isothermal luminescence in nonpolar binary mixtures at 77 K
The isothermal luminescence of γ-irradiated frozen 3-methylpentane (3MP)-methylcyclohexane (MCH) mixtures (3MP mole fraction from 0 to 0.96) containing naphthalene (Nph) was investigated at 77K. At high Nph concentration (2.5 x 10−2mol dm−>3) the luminescence is due to molecular ion recombination by tunnelling. In the soft glass (0.96 mole fraction 3MP) at low Nph concentration (10-3 mol dm-3) electron thermal detrapping seems to contribute to the emission. The experimental decay curves were interpreted based on the Bagdasar'yan relation as well as the continuous-time- random-walk formalism (assuming a first-order rate equation with a time dependent rate constant of the form k(t) = Bt(α−1).
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