International Journal for Radiation Physics and Chemistry最新文献_第7页

Vacuum ultraviolet radiation physics 真空紫外辐射物理学

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 Epub Date: 2002-10-09 DOI: 10.1016/0020-7055(76)90048-6

引用次数: 0

Formation of excited singlet toluene in the radiolysis of alkane containing toluene in the solid phase at 77 K 含甲苯的烷烃在77 K固相辐射分解过程中激发单线态甲苯的形成

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 Epub Date: 2002-10-09 DOI: 10.1016/0020-7055(76)90035-8

Toshiaki Tanaka, Tetsuo Miyazaki, Zen-Ichiro Kuri

引用次数: 6

Pulse radiolysis of adrenaline in acid aqueous solutions 肾上腺素在酸性水溶液中的脉冲放射溶解

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 Epub Date: 2002-10-09 DOI: 10.1016/0020-7055(76)90019-X

M. Gohn, N. Getoff, E. Bjergbakke

{"title":"Pulse radiolysis of adrenaline in acid aqueous solutions","authors":"M. Gohn, N. Getoff, E. Bjergbakke","doi":"10.1016/0020-7055(76)90019-X","DOIUrl":"10.1016/0020-7055(76)90019-X","url":null,"abstract":"<div>Pulse radiolysis of adrenaline in acid aqueous solutions (pH 1–3) was carried out. The rate constants for the reactions of adrenaline with H and OH were determined: k(H + adr.) = (0·9±0·1) × 109 dm3 mol−1 s−1; k(OH + adr.) = (1·65±0·15) × 1010 dm3 mol−1 s−1. The H-adduct of adrenaline has two λmax, at 280 and 355 nm, with ϵ280 = 420 m2 mol−1 and ϵ355 = 390 m2 mol−1, which disappears according to a first order reaction, k1 = 1·4 × 103 s−1. The spectra formed by OH attack was assigned to the corresponding benzoxy radical with absorption maxima at 285 and 365 nm and ϵ285 = 620 m2 mol−1 and ϵ365 = 105 m2 mol−1. Due to the overlapping of the intermediates, no decay kinetics could be obtained.</div>","PeriodicalId":100688,"journal":{"name":"International Journal for Radiation Physics and Chemistry","volume":"8 5","pages":"Pages 533-538"},"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)90019-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84592200","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

On some fundamental reactions in radiation chemistry: Nanosecond pulse radiolysis 辐射化学中的一些基本反应:纳秒脉冲辐射分解

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 Epub Date: 2002-10-09 DOI: 10.1016/0020-7055(76)90030-9

Yael Ilan , Joseph Rabani

引用次数: 40

Competition of bond rupture reactions in alkane radiolysis 烷烃辐射分解中键断裂反应的竞争

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 Epub Date: 2002-10-09 DOI: 10.1016/0020-7055(76)90024-3

G. Földiák, I. György, L. Wojnárovits

引用次数: 2

Volume 8 contents list and author index 卷8目录表和作者索引

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 Epub Date: 2002-10-09 DOI: 10.1016/0020-7055(76)90001-2

引用次数: 0

The effect of the molecular structure of thiols on the mechanism of their radical scavenging 硫醇分子结构对其自由基清除机制的影响

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 Epub Date: 2002-10-09 DOI: 10.1016/0020-7055(76)90009-7

Wendy L. Severs, Peter A. Hamilton, Tzu-Lin Tung, John A. Stone

引用次数: 4

Effect of 60Co-γ on the melting behaviour of single and poly-crystalline polyethylene 60Co-γ对单晶和多晶聚乙烯熔融行为的影响

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 Epub Date: 2002-10-09 DOI: 10.1016/0020-7055(76)90026-7

S. Rafi Ahmad, A. Charlesby

引用次数: 20

A pulse radiolysis and flash photolysis study of the formation and characterization of platinum (III) amine complex ions 脉冲辐射和闪光光解对铂(III)胺络合离子形成和表征的研究

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 Epub Date: 2002-10-09 DOI: 10.1016/0020-7055(76)90010-3

J.C. Brodovitch, D.K. Storer, W.L. Waltz, R.L. Eager

{"title":"A pulse radiolysis and flash photolysis study of the formation and characterization of platinum (III) amine complex ions","authors":"J.C. Brodovitch, D.K. Storer, W.L. Waltz, R.L. Eager","doi":"10.1016/0020-7055(76)90010-3","DOIUrl":"10.1016/0020-7055(76)90010-3","url":null,"abstract":"<div>An investigation into the formation and characterization of the transients arising from the reactions of hydroxyl radical with the complexes bis(ethylenediamine)platinum(II) perchlorate and chloride, chloro(diethylenetriamine)platinum(II) chloride and chloro(1,1,7,7-tetraethyldiethylenetriamine)platinum(II) chloride in aqueous media saturated with nitrous oxide has been carried out using the technique of pulse radiolysis. In general, the transients exhibit absorption bands with either a single, intense peak below 300 nm (ϵ ⪞ 400 m2 mol−1) or for the longer-lived species, two peaks of lesser intensity at about 350 and 500 nm. For the bis(ethylenediamine)-platinum(II) system, the transients are interrelated by acid-base reactions and in the presence of free chloride ion by substitution process. The disappearance of the longer-lived intermediate, which obeys second-order kinetics, does not lead to the formation of detectable amounts of ammonia (or free ethylenediamine). This feature in conjunction with other results indicates that the transients are not those arising from the degradation or loss of the co-ordinated amine ligand. Some of the intermediates exhibit reactivity towards either copper(II) perchlorate, an oxidant, or the reducing agent potassium ferrocyanide. The flash photolysis of trans-dichlorobis(ethylenediamine)platinum(IV) perchlorate has been used to generate and further characterize some of the transients encountered in the pulse radiolysis study. It is concluded that the intermediates are platinum(III) amine complex ions. For the Pt(III) species with absorption peaks below 300 nm, their structures are proposed to be distorted octahedra with substitutionally labile co-ordination sites. It is suggested that the products absorbing above 300 nm may be structurally different from those absorbing below 300 nm.</div>","PeriodicalId":100688,"journal":{"name":"International Journal for Radiation Physics and Chemistry","volume":"8 4","pages":"Pages 465-475"},"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)90010-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82497733","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

Spin trapping of the short-lived free radicals formed in γ-irradiated alcohols γ辐照醇中形成的短寿命自由基的自旋俘获

International Journal for Radiation Physics and Chemistry Pub Date : 1976-01-01 Epub Date: 2002-10-09 DOI: 10.1016/0020-7055(76)90012-7

M. Shiotani, S. Murabayashi, J. Sohma

引用次数: 26