International Journal for Radiation Physics and Chemistry最新文献_第5页

Excited states in the radiation chemistry of gaseous diatomic hydrides 气态双原子氢化物辐射化学中的激发态

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90067-X

D. Armstrong, C. Willis

引用次数: 4

Pulse radiolysis study on tetra-alkylammonium hydroxides in alkaline solutions containing O2 and N2O 四烷基氢氧铵在含O2和N2O碱性溶液中的脉冲辐射分解研究

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90018-8

K. Bobrowski, J.P. Suwalski, Z.P. Zagórski

{"title":"Pulse radiolysis study on tetra-alkylammonium hydroxides in alkaline solutions containing O2 and N2O","authors":"K. Bobrowski, J.P. Suwalski, Z.P. Zagórski","doi":"10.1016/0020-7055(76)90018-8","DOIUrl":"10.1016/0020-7055(76)90018-8","url":null,"abstract":"<div>The reactivity of the oxide radical ion, O−, and the decay kinetics of the ozonide ion, O3−, have been investigated in aqueous solutions at pH 12·8, in the presence of tetramethyl-, tetraethyl-, tetrapropyl- and tetrabutylammonium ions, O2 and N2O. Using pulse radiolysis to follow the O3− kinetics gives information on the competition of O2 and R4N+ for O−. Absolute rate constants for these reactions are: 3·0 × 108 dm3 mol−1 s−1 for O− + (CH3)4N+, 1·0 × 109 dm3 mol−1 s−1 for O− + (C2H5)4N+, 1·3 × 109 dm3 mol−1 s−1 for O− + (C3H7)4N+ and 2·2 × 109 dm3 mol−1 s−1 for O− + (C4H9)4N+.The decay of O3− occurs through the thermal dissociation reaction, O3 ⇌ O2 + O−, for which the absolute rate constant at 22°C was found to be 6·2 ± 1·2 × 103 s−1.</div>","PeriodicalId":100688,"journal":{"name":"International Journal for Radiation Physics and Chemistry","volume":"8 5","pages":"Pages 527-531"},"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)90018-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82169136","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: 2

Dr. H. Hering-Biography 赫林博士传记

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90052-8

J. Sutton

引用次数: 0

On the use of nitrous oxide and ethylene for gas phase dosimetry 用一氧化二氮和乙烯进行气相剂量测定

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90089-9

Igor Janovský

引用次数: 3

Scavenging of ions in irradiated organic liquids 辐照有机液体中离子的清除

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90072-3

J. Kroh, E. Hankiewicz, J. Piekarska

{"title":"Scavenging of ions in irradiated organic liquids","authors":"J. Kroh, E. Hankiewicz, J. Piekarska","doi":"10.1016/0020-7055(76)90072-3","DOIUrl":"10.1016/0020-7055(76)90072-3","url":null,"abstract":"<div>The kinetics of positive ion and electron scavengin gin certain n-alkanes, cycloalkanes, branched alkanes, aromatic hydrocarbons and in some polar compounds (ethers, dimethyl-formamide) have been investigated.The non-homogeneous kinetic approach gives satisfactory agreement with experimental Results for n-hexane, cyclohexane, iso-octane and 2,3-dimethylbutane. Differences between positive ion and electron scavenging for ethers have been observed and ascribed to the complex structure of the corresponding positive ions. For benzene and dimethylformamide the homogeneous kinetic equation gives the best agreement with experimental results.Characteristic parameters such as Gfi, Ggi, reactivity coefficients α, rate constant of ion scavenging ks, geminate recombination parameters for several solvents λ, and the most probable distances of electron thermalization have been determined or calculated.The effect of molecular structure on the ionic reactions has been discussed.</div>","PeriodicalId":100688,"journal":{"name":"International Journal for Radiation Physics and Chemistry","volume":"8 3","pages":"Pages 289-304"},"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)90072-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84508672","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: 4

The pulse radiolysis of aqueous solutions of simple RCN compounds 简单RCN化合物水溶液的脉冲辐射分解

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90077-2

I.G. Draganić, Z.D. Draganić, V.M. Marković

引用次数: 19

Reactions intratrajectories dans la radiolyse de solutions aqueuses par les particules de recul de 10B(n, α)7Li 10B(n， α)7Li反冲粒子在水溶液辐射分解中的路径内反应

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90031-0

J. Pucheault, P. Sigli

引用次数: 4

Formation and behavior of excited cations 受激阳离子的形成和行为

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90063-2

Walter S. Koski

引用次数: 0

A pulse radiolysis investigation of 9,10-diphenylanthracene excited state formation in 3-methylpentane at low temperature 低温下3-甲基戊烷中9,10-二苯基蒽激发态的脉冲辐射分解研究

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90005-X

J. Kroh, J. Mayer, J.L. Gȩbicki, J. Grodkowski

引用次数: 11

Mobility of the electron in liquid and solid 3-methylpentane 电子在液体和固体3-甲基戊烷中的迁移率

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90016-4

G.F. Novikov, B.S. Yakovlev

{"title":"Mobility of the electron in liquid and solid 3-methylpentane","authors":"G.F. Novikov, B.S. Yakovlev","doi":"10.1016/0020-7055(76)90016-4","DOIUrl":"10.1016/0020-7055(76)90016-4","url":null,"abstract":"<div>The authors have investigated the current of electrical conductivity I induced by a pulse of 2 × 10−7 s of high energy electrons in 3-methylpentane (3MP) over the temperature range 94–296 K. The determination of the drift mobility of the excess electron u is based on measurement of the amplitude of I in conditions in which the lifetime of the excess electron in 3MP τ ⪢ 2 × 10−7 s and the total number of free charges q generated in the course of one pulse. In liquid 3MP q was measured by integrating I and in solid 3MP by integrating the current of thermostimulated conductivity on heating the sample to melting point. At T = 296 K the value u = 0·22 cm2 V−1 s−1 and agrees with the value obtained from measurements of the time of transit by the electron of the distance between electrodes d≈0·1 cm.In the temperature interval from 94–296 K the value u monotonically changes from 10−8 to 0·22 cm2 V−1 s−1. In the region of the melting point, the values of u in liquid and solid 3MP are much the same, whereas the activation energy changes from 0·14 to 0·4 eV on passing from liquid to solid 3MP. The activation energy of the mobility of the electron in solid 3MP is connected with the energy of the thermal release of the electron from the deepest structural traps.Extrapolation of the function u(T) by the Arrhenius law with an activation energy of 0·4 eV gives the value u ≈ 10−15 cm2 V−1 s−1 at 77 K which accords with the value obtained from measurement of the quasi-steady photo-conductivity and evaluation of the lifetime of the trapped electron in 3MP at 77 K.</div>","PeriodicalId":100688,"journal":{"name":"International Journal for Radiation Physics and Chemistry","volume":"8 4","pages":"Pages 517-518"},"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)90016-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88749614","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: 10