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International Journal for Radiation Physics and Chemistry最新文献

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Two fast photodiodes for use in pulse radiolysis 用于脉冲辐射分解的两个快速光电二极管
International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90011-5
G.G. Teather, N.V. Klassen, H.A. Gillis
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引用次数: 8
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.A. Armstrong, C. Willis
{"title":"Excited states in the radiation chemistry of gaseous diatomic hydrides","authors":"D.A. Armstrong,&nbsp;C. Willis","doi":"10.1016/0020-7055(76)90067-X","DOIUrl":"https://doi.org/10.1016/0020-7055(76)90067-X","url":null,"abstract":"<div><p>Although some uncertainty concerning the yield of triplet excited states exists, the yields of ions and atoms predicted from electron impact cross-sections and other information are in relatively good agreement with experimental data for the radiolysis of H<sub>2</sub>. A substantial contribution to the atom yield comes from excited states lying just below and above the ionization potential. Less information is available for hydrogen halides. However, while rapid auto-ionization occurs for some superexcited states of HCl, there is again evidence for disscoiations- in this case to form H(1s) and excited Cl. The occurence of this type of process is supported by energy balance calculations for both HCl and HBr. The behaviour of the low-lying excited states of these molecules is relatively well understood.</p></div>","PeriodicalId":100688,"journal":{"name":"International Journal for Radiation Physics and Chemistry","volume":"8 1","pages":"Pages 221-235"},"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)90067-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91630507","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
Electron impact induced electronic excitation and molecular dissociation 电子冲击诱导电子激发和分子解离
International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90070-X
L.S. Polak, D.I. Slovetsky
{"title":"Electron impact induced electronic excitation and molecular dissociation","authors":"L.S. Polak,&nbsp;D.I. Slovetsky","doi":"10.1016/0020-7055(76)90070-X","DOIUrl":"https://doi.org/10.1016/0020-7055(76)90070-X","url":null,"abstract":"<div><p>Electron impact dissociation following molecular electronic excitation is shown to be one of the main dissociation channels for most molecules and the main one for a number of them. The calculated cross-sections and the rate constants for the dissociation process are given for a number of molecules. The influence of vibrational and rotational excitation of the target molecules on the cross-sections and the rate constants are analysed.</p></div>","PeriodicalId":100688,"journal":{"name":"International Journal for Radiation Physics and Chemistry","volume":"8 1","pages":"Pages 257-282"},"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)90070-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91630579","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: 38
Radioluminescence of methylcyclohexane in the glassy state 甲基环己烷在玻璃态的放射发光
International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90069-3
J. Kroh, R. Leszczyński, J. Mayer
{"title":"Radioluminescence of methylcyclohexane in the glassy state","authors":"J. Kroh,&nbsp;R. Leszczyński,&nbsp;J. Mayer","doi":"10.1016/0020-7055(76)90069-3","DOIUrl":"https://doi.org/10.1016/0020-7055(76)90069-3","url":null,"abstract":"<div><p>The radioluminescence of pure, frozen methylcyclohexane (MCH) has been investigated. λ-Irradiation of MCH at 77 K produces at least three negative species—trapped electrons, e<sup>-</sup><sub><em>t</em></sub>, and two types of anions, which are formed in the reactions of electrons with radicals, R<sup>-</sup>, and with stable radiolysis products, P<sup>-</sup>. It is shown that the radiothermoluminescence (RTL) emission is due to the recombination of e<sub><em>t</em></sub>-(RTL peak at 90 K) and R<sup>-</sup>, P<sup>-</sup> (RTL peak at 95 K) with cations. The intensity-dose dependence of the RTL peaks has been interpreted using a simple kinetic model.</p></div>","PeriodicalId":100688,"journal":{"name":"International Journal for Radiation Physics and Chemistry","volume":"8 1","pages":"Pages 247-256"},"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)90069-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91630580","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: 3
Electron impact induced electronic excitation and molecular dissociation 电子冲击诱导电子激发和分子解离
International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90070-X
L. Polak, D. Slovetsky
{"title":"Electron impact induced electronic excitation and molecular dissociation","authors":"L. Polak, D. Slovetsky","doi":"10.1016/0020-7055(76)90070-X","DOIUrl":"https://doi.org/10.1016/0020-7055(76)90070-X","url":null,"abstract":"","PeriodicalId":100688,"journal":{"name":"International Journal for Radiation Physics and Chemistry","volume":"1 1","pages":"257-282"},"PeriodicalIF":0.0,"publicationDate":"1976-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90908798","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: 38
World's leading nuclear scientists to convene November 14–19 in Washington, D.C. 世界顶尖的核科学家将于11月14日至19日在华盛顿特区召开会议
International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90049-8
{"title":"World's leading nuclear scientists to convene November 14–19 in Washington, D.C.","authors":"","doi":"10.1016/0020-7055(76)90049-8","DOIUrl":"https://doi.org/10.1016/0020-7055(76)90049-8","url":null,"abstract":"","PeriodicalId":100688,"journal":{"name":"International Journal for Radiation Physics and Chemistry","volume":"8 6","pages":"Pages 723-724"},"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)90049-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136603664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Gamma and pulse radiolysis of methanolic solutions of triphenylphosphine 三苯基膦甲醇溶液的伽马和脉冲辐射分解
International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90039-5
M. Venturi, A. Breccia, F. Busi, Q.G. Mulazzani
{"title":"Gamma and pulse radiolysis of methanolic solutions of triphenylphosphine","authors":"M. Venturi,&nbsp;A. Breccia,&nbsp;F. Busi,&nbsp;Q.G. Mulazzani","doi":"10.1016/0020-7055(76)90039-5","DOIUrl":"10.1016/0020-7055(76)90039-5","url":null,"abstract":"<div><p>In irradiated methanolic solutions of triphenylphosphine (Ph<sub>3</sub>P) deaerated with argon or saturated with N<sub>2</sub>O a transient spectrum has been detected. This spectrum is attributed to Ph<sub>3</sub>PCH<sub>2</sub>OH and a value of <em>k</em><sub>(CH<sub>2</sub>OH+Ph<sub>3</sub>P)</sub> = 8.8 <em>x</em> 10<sup>9</sup><em>mol</em><sup>−1</sup><em>dm</em><sup>3</sup><em>S</em><sup>−</sup> has been detemined. No evidence has been obtained for a reaction between e<sub>sol</sub><sup>−1</sup> and Ph<sub>3</sub>P in methanol.</p><p>The gamma-irradiation of oxygen-saturated methanolic solutions of Ph<sub>3</sub>P have shown that, under these conditions, Ph<sub>3</sub>P is oxidized to Ph<sub>3</sub>PO according to a chain reaction mechanism. The experimental results are in good agreement with the equation for <em>G</em>(-Ph<sub>3</sub>P) = <em>G</em>(Ph<sub>3</sub>PO) obtained by steady-state treatment of the proposed mechanism.</p></div>","PeriodicalId":100688,"journal":{"name":"International Journal for Radiation Physics and Chemistry","volume":"8 6","pages":"Pages 673-677"},"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)90039-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78404732","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: 3
Determination of superoxide (O2−) radical anion reaction rates using pulse radiolysis 脉冲辐射解法测定超氧(O2−)自由基阴离子反应速率
International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90082-6
C.L. Greenstock, G.W. Ruddock
{"title":"Determination of superoxide (O2−) radical anion reaction rates using pulse radiolysis","authors":"C.L. Greenstock,&nbsp;G.W. Ruddock","doi":"10.1016/0020-7055(76)90082-6","DOIUrl":"10.1016/0020-7055(76)90082-6","url":null,"abstract":"<div><p>Pulse radiolysis has been used to measure the rates of reactions of O<sub>2</sub><sup>−</sup> with electron donors and acceptors, either directly or by a competition kinetic method using <em>p</em>-benzoquinone. O<sub>2</sub><sup>−</sup> readily reduces quinones and various redox dyes and enzymes, and oxidizes ascorbate and catecholamines, but is quite unreactive towards aromatic amino acids, nucleic acids, sugars and alcohols.</p></div>","PeriodicalId":100688,"journal":{"name":"International Journal for Radiation Physics and Chemistry","volume":"8 3","pages":"Pages 367-369"},"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)90082-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72975884","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: 24
Pulse radiolysis studies on aqueous systems PtCl42−Cl− and PtCl42−Br− 脉冲辐射溶解水溶液PtCl42−Cl−和PtCl42−Br−的研究
International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90081-4
R.K. Broszkiewicz, J. Grodkowski
{"title":"Pulse radiolysis studies on aqueous systems PtCl42−Cl− and PtCl42−Br−","authors":"R.K. Broszkiewicz,&nbsp;J. Grodkowski","doi":"10.1016/0020-7055(76)90081-4","DOIUrl":"10.1016/0020-7055(76)90081-4","url":null,"abstract":"<div><p>Pulse irradiation of PtCl<sub>4</sub><sup>2−</sup> in aqueous solutions containing Cl<sup>−</sup> or Br<sup>−</sup> indicates that oxidation of Pt(II) by OH may be wholly or partially replaced by oxidation by Cl<sub>2</sub><sup>−</sup> or Br<sub>2</sub><sup>−</sup>, depending on the efficiency of OH scavenging by the particular halide ion. The Pt(III) species produced by the latter reactants absorb respectively at 290 and 310 nm and differ from that produced by OH. Contrary to the similar PdCl<sub>4</sub><sup>2−</sup> no evidence of Pt(II) co-ordinating more than four Cl<sup>−</sup> ions has been obtained. The rate constants of the processes and extinction coefficients of the transient species observed are reported.</p></div>","PeriodicalId":100688,"journal":{"name":"International Journal for Radiation Physics and Chemistry","volume":"8 3","pages":"Pages 359-365"},"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)90081-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76899776","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: 12
Fragmentation of excited molecules and ions in the radiolysis of hydrocarbons 在碳氢化合物的放射性分解中受激发的分子和离子的破碎
International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 DOI: 10.1016/0020-7055(76)90064-4
Shoji Shida , Yoshihiko Hatano
{"title":"Fragmentation of excited molecules and ions in the radiolysis of hydrocarbons","authors":"Shoji Shida ,&nbsp;Yoshihiko Hatano","doi":"10.1016/0020-7055(76)90064-4","DOIUrl":"10.1016/0020-7055(76)90064-4","url":null,"abstract":"<div><p>A survey is given of recent studies of the primary CH and CC bond dissociations of excited molecules and ions in the gas- and liquid-phase radiolysis of hydrocarbons, which have been mainly carried out by the product analysis method. In the CC bond dissociations evidence has been presented for the fragmentation of the excited parent ion, while in the CH bond dissociations attention has been focused upon an important role of hot hydrogen atoms in the hydrogen formation. A theoretical treatment of highly excited hydrocarbon molecules involving super-excited states is also described.</p></div>","PeriodicalId":100688,"journal":{"name":"International Journal for Radiation Physics and Chemistry","volume":"8 1","pages":"Pages 171-185"},"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)90064-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88615482","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: 18
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