International Journal for Radiation Physics and Chemistry最新文献_第10页

Formation and role of excited states in radiolysis—A foreword 放射性溶解中激发态的形成和作用——前言

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90055-3

Ajit Singh

引用次数: 0

Etude de la radiolyse du pentane normal a 77 K par capture des radicaux apres l'irradiation 通过捕获自由基来研究正常戊烷在77k辐照后的辐射分解

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90086-3

J. Allaert, P. Claes, B. Tilquin

引用次数: 3

Pulse radiolysis of aqueous solutions of tetraphenylphosphonium ions 脉冲辐射解四苯基磷离子水溶液

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90017-6

H. Horii, S. Fujita, T. Mori, S. Taniguchi

{"title":"Pulse radiolysis of aqueous solutions of tetraphenylphosphonium ions","authors":"H. Horii, S. Fujita, T. Mori, S. Taniguchi","doi":"10.1016/0020-7055(76)90017-6","DOIUrl":"10.1016/0020-7055(76)90017-6","url":null,"abstract":"<div>The reactions of tetraphenylphosphonium ion (Ar4P+) with eaq−, H atoms and OH radicals have been investigated. The absorption spectra of three transient species were obtained. Ar4P· radicals formed by the reaction: Ar4P+ + eaq− → Ar4P· have a maximum absorption at 305 nm [ε305 = (9400 ± 300) dm3 mol−1 cm−1] and decays by second-order kinetics with the rate constant 2k = (2·7 ±0·4) × 109 dm3 mol−1 s−1. H atoms and OH radicals form transient adducts to the phenyl groups of the Ar4P+ ion with the rate constants of (1·5 ± 0·3) × 109 dm3 mol−1 s−1 and (3·0±0·3) × 109 dm3 mol−1 s−1, respectively. Both adducts have broad absorption spectra at 300≈380 nm (λmax = 340 nm) with the molar extinction coefficients ε340 = 5400±300 dm3 mol−1 cm−1 for the H adduct and ε340 = 3500±200 dm3 mol−1 cm−1 for the OH adduct.</div>","PeriodicalId":100688,"journal":{"name":"International Journal for Radiation Physics and Chemistry","volume":"8 4","pages":"Pages 521-522"},"PeriodicalIF":0.0,"publicationDate":"1976-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-7055(76)90017-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88178588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Thermoluminescence isothermal decay in γ-irradiated CaSO4 : Dy phosphors—kinetics, and distribution of trap depths γ辐照CaSO4: Dy磷的热释光等温衰减动力学及俘获深度分布

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90006-1

O. Fiorella, M. Mangia, E. Oliveri

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引用次数: 23

Diffusion kinetics of radical intermediates in radiation chemistry 辐射化学中自由基中间体的扩散动力学

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90002-4

Wolfgang Naumann, Wolfgang Stiller

引用次数: 3

Radiolysis of monocrystalline, liquid and aqueous solutions of methane sulphonic acid 甲烷磺酸单晶、液体和水溶液的辐射分解

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90036-X

T.E. Eriksen, J. Lind, T. Gillbro

{"title":"Radiolysis of monocrystalline, liquid and aqueous solutions of methane sulphonic acid","authors":"T.E. Eriksen, J. Lind, T. Gillbro","doi":"10.1016/0020-7055(76)90036-X","DOIUrl":"10.1016/0020-7055(76)90036-X","url":null,"abstract":"<div>A study of the radiolysis of monocrystalline, liquid and aqueous solutions of methane sulphonic acid is reported. E.S.R.-measurements on γ-irradiated single crystals show that two radicals ·CH2SO2(OH) and CH3ŻSO2(OH)− are formed. Sulphonic acid-water mixtures were investigated by pulse radiolysis. A short-lived transient absorption with maximum at 450 nm is assigned to the radical ion CH3ŻSO2(OH)− (ϵ = 1740 dm3 mol−1 cm−1). Two longer-lived transient absorptions at 263 and 347 nm in concentrated solution were shifted to 242 and 332 nm respectively with increasing water concentration.The 242/263 nm absorption is ascribed to the ·CH2SO3− radical and its protonated form and the 332/347 nm absorption to the CH3SO2· radical formed by the decomposition of the CH3ŻSO2(OH)− radical ion. The interpretation of E.S.R. and optical spectra is based on the assumption of a hydrogen bonding structure of the sulphonic acid.</div>","PeriodicalId":100688,"journal":{"name":"International Journal for Radiation Physics and Chemistry","volume":"8 6","pages":"Pages 655-659"},"PeriodicalIF":0.0,"publicationDate":"1976-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-7055(76)90036-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75129986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Reactions of OH radicals with tris(1,10-phenanthroline)iron(II) studied by pulse radiolysis 脉冲辐射解法研究羟基自由基与三(1,10-菲罗啉)铁(II)的反应

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90004-8

E. S. Floryan, P. Pagsberg

引用次数: 7

Observation of excited states in the radiolysis of liquid hydrocarbons 液态烃辐射分解激发态的观察

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90056-5

J.K. Thomas

引用次数: 29

The applicability of the diffusion-drift model of radiolysis of non-polar organic fluids containing additives of charged particle acceptors 含带电粒子受体添加剂的非极性有机流体辐射分解扩散漂移模型的适用性

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90073-5

Yu.A. Berlin

{"title":"The applicability of the diffusion-drift model of radiolysis of non-polar organic fluids containing additives of charged particle acceptors","authors":"Yu.A. Berlin","doi":"10.1016/0020-7055(76)90073-5","DOIUrl":"10.1016/0020-7055(76)90073-5","url":null,"abstract":"<div>The conditions determining the limits of applicability of the diffusion-drift model (DDM) of radiolysis of non-polar organic fluids containing additives of acceptors of charged particles have been obtained. The validity of the DDM for saturated hydrocarbons is associated with the localization of the electrons which move in the medium by thermally activated jumps from one localized state to another. It is shown that the use of the DDM in radiation-chemical kinetics is justified if the lenght of localization l (or the mean length of the free path Λ) of the electrons is small as compared with the characteristic dimension of the problem. For describing the death of ion pairs such a characteristic dimension is the mean initial distance between their components and for calculating the rate constants of the reactions of recombination and capture of the charges by an acceptor the radius of the absorbing sphere R. The corrections arising from calculation of these constants for the systems where lL (or Λ) is greater than or comparable with R are evaluated.</div>","PeriodicalId":100688,"journal":{"name":"International Journal for Radiation Physics and Chemistry","volume":"8 3","pages":"Pages 305-311"},"PeriodicalIF":0.0,"publicationDate":"1976-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-7055(76)90073-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80064436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Physical electron trapping in boric acid glass in competition with the H+ chemical trapping. A study by recombination delayed fluorescence 硼酸玻璃中的物理电子俘获与H+化学俘获的竞争。复合延迟荧光的研究

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90040-1

M. Ewald, R. Lesclaux

引用次数: 0