[en] The symposium was held on OctoOer 8-12, 1984 in Vienna. It was attended by 90 specialists from 36 member countries and organizations of the IAEA. The presented papers dealt with the international dose assurance service, the standardization of the measurement of high doses, dosimetry for industrial irradiation, the problems of determining doses at the phase interface of metal and ceramic materials, so-called radical dosimetry, the use of LiF dosemeters, the measurement of doses and profiles of accelerated electron beams, lyoluminescence, the application of different types of dosemeters in measuring high doses, etc. (M.D.)

[en] The paper is structured as follows: A short look into history of accelerators; Particle accelerators in the Czech lands (Accelerators at the Institute of Nuclear Physics; Accelerators at the Faculty of Mathematics and Physics, Charles University; Czechoslovak betatron, accelerators for non-destructive testing and radiotherapy; Czechoslovak high-frequency linear electron accelerator; Czechoslovak-Soviet microtron; Accelerators at the State Research Institute of Textiles; Accelerators at the Kablo Vrchlabi plant; and Cyclotrons in the medical sector. (P.A.)

[en] A brief introduction into the title topic, concentrating on the history of the efforts worldwide and, in particular, in Czechoslovakia (or today's Czech Republic). Specifically named are the Nuclear Research Institute at Rez, Prague Institute of Chemical Technology, Central Bohemian Museum at Roztoky with its irradiation facility, and the Central Institute for Isotope and Radiation Research in Leipzig, Germany. (P.A.)

[en] The experience is reported gained with the dosimetry of electron radiation from linear high-frequency accelerators using thin films and chemical systems. The calorimetric method was used for calibration. (B.S.)

[en] The article deals with the following topics: Milestones in the early history of radiation and radiation sources (1895-1954); Radiation effects - early observations and further development; Scope of radiation processing; Radiation processing in the Czech Lands (i.e. Bohemia + Moravia = the Czech part of Czechoslovakia or Austria-Hungary till 1918) (radiation sterilization of medical items; radiation processing of cable insulations; radiation preservation of objects of art and historical monuments; radiation modification of semiconductors; radiation synthesis of organic compounds; food irradiation; application of ionizing radiation in agriculture and gardening; radiation regeneration of water wells; radiation degradation of chlorinated biphenyls; radiation coloration of glass for decorative purposes; some other applications; and problems associated with practical radiation processing). An overview of ⁶⁰Co gamma irradiators and electron accelerators installed at Czech institutions is presented in the tabular form. (P.A.)

[en] Special nuclear analytical methods contribute significantly to the identification of the origin, manufacturing technology and/or authenticity of objects of art and historical monuments, Such methods primarily include variants of X-ray fluorescence analysis and activation analysis. The former enables non/destructive testing of materials, the latter features a high sensitivity. The article presents numerous examples of use of such methods especially in the Czech Republic (or former Czechoslovakia). (author)

[en] The document includes a compilation of the 3 most frequently used standards applicable to the qualification and testing of Class 1E equipment for nuclear power plants, viz. IEEE 323, IEEE 383, and IEC 544. A literature overview of the radiation resistance of some cable-insulating materials in various environmental conditions is also presented and completed with the most recent pieces of knowledge in this field of science and technology. The text is in English and Czech in parallel, figure captions are in English. 6 tabs., 25 figs., 48 refs

[en] Fesup(III)(phen)sub(3)sup(3+) in aqueous solution is reduced rapidly with radiolytic H atoms. The rate constant is k= x10⁹ dm³mol^-1s^-1. An additional reduction reaction observed caused probably by (CH₃)₂C(OH)CH₂ radicals is somewhat slower (k approximately 10⁷ dm³mol^-1sec^-1. The product of both reactions is the stable Fesup(II)(phen)sub(3)sup(2+) complex. (author)

[en] On the pulse radiolysis of aqueous borate solution (pH 9.5) containing iodide, I₂^- with G(I₂^-)=G(OH) radical is formed. The observed I₃^-, formed by combination of I₂^- is in equilibrium with I₃I₂ and other iodine containing species. I₃^- disapears apparently as a result of reactions of I₂ with H₂O₂ and O₂^-. (author)

No abstract available