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AbstractAbstract
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Original Title
Elektronenstoss-Doppelionisation von Blei-Ionen
Primary Subject
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Journal Article
Journal
Verhandlungen der Deutschen Physikalischen Gesellschaft; ISSN 0420-0195;
; CODEN VDPEAZ; v. 40(3); p. 37

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AbstractAbstract
[en] To realize the safety of personnel and environment systems and components of nuclear facilities are classified according to their potential danger into safety classes. Based on this classification different demands on the manufacturing quality result. The objective of this work is to present the standardized method developed by NUKEM Technologies Engineering Services for the categorization into the safety classes restricted to Non-reactor nuclear facilities (NRNF). Exemplary the methodology is used on the complex Russian normative system (four safety classes). For NRNF only the lower two safety classes are relevant. The classification into the lowest safety class 4 is accordingly if the maximum resulting dose following from clean-up actions in case of incidents/accidents remains below 20 mSv and the volume activity restrictions of set in NRB-99/2009 are met. The methodology is illustrated using an example. In short the methodology consists of: - Determination of the working time to remove consequences of incidents, - Calculation of the dose resulting from direct radiation and due to inhalation during these works. The application of this methodology avoids over-conservative approaches. As a result some previously higher classified equipment can be classified into the lower safety class.
Original Title
Entwicklung einer Methodik zur Sicherheitsklassifizierung fuer eine kerntechnische Anlage ohne Reaktor an einem spezifischen Beispiel
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Secondary Subject
Source
Hajek, Michael (International Atomic Energy Agency, Wien (Austria)); Maringer, Franz Josef; Steurer, Andreas (Bundesamt fuer Eich- und Vermessungswesen, Wien (Austria)); Schwaiger, Martina (Seibersdorf Labor GmbH, Seibersdorf (Austria)); Timal, Guenter (Bundesministerium fuer Inneres, Wien (Austria)) (eds.); Fachverband fuer Strahlenschutz e.V., Karlsruhe (Germany); 261 p; ISBN 978-3-8249-1972-7;
; 2015; p. 153-158; 8. Joint meeting of the Oesterreichische Verband fuer Strahlenschutz OeVS and the Fachverband fuer Strahlenschutz e.V. for Germany and Switzerland. 47. Annual meeting of the FS; 8. Gemeinsame Tagung des Oesterreichischen Verbandes fuer Strahlenschutz OeVS und des Fachverbandes fuer Strahlenschutz e.V. fuer Deutschland und die Schweiz. 47. Jahrestagung des FS; Baden bei Wien (Austria); 5-9 Oct 2015; ISSN 1013-4506; 


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Book
Literature Type
Conference
Country of publication
BIOLOGICAL RADIATION EFFECTS, CLASSIFICATION, DECONTAMINATION, FISSION PRODUCT RELEASE, INHALATION, MILLI SV RANGE 10-100, OCCUPATIONAL EXPOSURE, OCCUPATIONAL SAFETY, PERSONNEL, RADIATION ACCIDENTS, RADIATION DOSES, RADIATION HAZARDS, RADIOACTIVE WASTE STORAGE, RISK ASSESSMENT, RUSSIAN FEDERATION, SAFETY ANALYSIS
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AbstractAbstract
No abstract available
Original Title
Einfachionisation hochgeladener Blei-Ionen durch Elektronenstoss
Primary Subject
Record Type
Journal Article
Journal
Verhandlungen der Deutschen Physikalischen Gesellschaft; ISSN 0420-0195;
; CODEN VDPEAZ; v. 40(3); p. 37

Country of publication
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INIS IssueINIS Issue
AbstractAbstract
[en] Electron-impact ionization of ions is one of the most fundamental processes in every kind of plasma. Especially in high-temperature plasmas-whether in laboratory (nuclear fusion) or in astrophysics (atmosphere of stars)-atoms become ionized into multiply-charged ions by electron impact. The main purpose of authors' investigations is to unravel the contributions from different ionization mechanisms-like direct ionization (one-step process), excitation-autoionization (two-step process) and inner-shell Auger processes to the cross sections of single and multiple ionization of highly-charged ions. As the experimental database is still rather small, theoretical cross sections are often used for the calculation of different plasma parameters. Cross sections for ions with an outer 4f shell are usually small and experimental data is needed in order to test theories in that region. In the present study, the authors investigate the ionization of praseodymium ions, where cross section data has not been available up to now
Primary Subject
Record Type
Journal Article
Journal
Nuclear Physics Review; ISSN 1007-4627;
; v. 19(2); p. 144-146

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AbstractAbstract
[en] Electron-impact ionization cross sections σq,q+n have been measured for the reaction e + Smq+ → Sm(q+n) + (n + 1)e for single, double and triple ionization and initial charge states q = 1, 2, 3. The measurements have been performed using the dynamic crossed-beams technique in an energy range from the respective ionization threshold up to 1 keV. Furthermore, we have measured the single-ionization cross section for Sm12+ using the dynamic crossed- beams method and an energy-scan method. The cross sections are compared with semi-empirical formulae. In most cases the measured cross sections are described insufficiently. In the single-ionization cross section for Sm12+ a remarkable number of narrow structures resulting from resonant excitation with subsequent double-autoionization (REDA) are observed. (orig.)
Primary Subject
Source
HCI 2000: 10. international conference on the physics of highly charged ions; Berkeley, CA (United States); 30 Jul - 3 Aug 2000
Record Type
Journal Article
Literature Type
Conference; Numerical Data
Journal
Physica Scripta. T; ISSN 0281-1847;
; v. 92; p. 262-264

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INIS VolumeINIS Volume
INIS IssueINIS Issue
Aichele, K.; Arnold, W.; Braeuning, H.; Hathiramani, D.; Scheuermann, F.; Trassl, R.; Salzborn, E., E-mail: e.salzborn@strz.uni-giessen.de2003
AbstractAbstract
[en] Using the dynamic crossed-beams method, the following absolute cross sections σq,q+n for single (n=1), double (n=2) and triple (n=3) ionization by electron impact have been measured for the reaction e-+Prq+→Pr(q+n)++(n+1)e- n=1: σ2,3 σ3,4σ4,5 σ6,7 σ7,8 σ8,9 σ11,12 n=2: σ1,3 σ2,4 σ3,5 σ4,6 n=3: σ1,4 σ2,5 σ3,6 The measurements have been performed in an energy range from the respective threshold up to 1 keV. For the single-ionization cross sections, contributions from excitation-autoionization processes increase with increasing charge state of the parent ion. As no theoretical calculations on praseodymium ions exist, these cross sections are compared to the semi-empirical Lotz formula [Zeitschrift fuer Physik 232 (1970) 101]. Where contributions of indirect inner-shell processes to the cross section are expected, we conducted energy-scan measurements with high energy resolution. For multiple ionization, no theoretical calculations on praseodymium ions exist. Therefore, the measured cross sections were compared to the semi-empirical formulae by Belenger et al. [J. Phys. B: At. Mol. Opt. Phys. 30 (1997) 2667] and Fisher et al. [J. Phys. B: At. Mol. Opt. Phys. 28 (1995) 3027]
Primary Subject
Source
11. international conference on the physics of highly charged ions; Caen (France); 1-6 Sep 2002; S0168583X03005652; Copyright (c) 2003 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Literature Type
Conference
Journal
Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms; ISSN 0168-583X;
; CODEN NIMBEU; v. 205(1-4); p. 437-443

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Jung, H.G.; Heiduk, J.; Scheuermann, F., E-mail: hagen.jung@ymail.com
Uranium Production Cycle Selected Papers 2012–2015. Proceedings of a Series of Technical Meetings2019
Uranium Production Cycle Selected Papers 2012–2015. Proceedings of a Series of Technical Meetings2019
AbstractAbstract
[en] Conventional production of uranium across the world creates millions of tonnes of tailings annually, which are typically placed in above ground tailings impoundments. However, particularly tailings resulting from leaching of high grade uranium ores have the potential to cause serious environmental impacts. In spite of significant improvements which have been made in recent years to operational and short term safety of those tailings impoundments, their provision of reliable long term safety is still not satisfying. By advancement of the processing technology for uranium ore a solution is achieved to comprehensively eliminate risks which can derive from those tailings. Removal of radionuclides other than uranium as well as toxic metals can be achieved, if also these are intentionally extracted. The overall objective is to prevent the generation of future uranium production legacies with associated high follow–up costs. (author)
Primary Subject
Source
International Atomic Energy Agency, Nuclear Fuel Cycle and Materials Section, Vienna (Austria); 308 p; ISBN 978-92-0-103019-1;
; ISSN 1011-4289;
; Jun 2019; p. 191-205; Also available on-line: https://www-pub.iaea.org/MTCD/Publications/PDF/TE-1873web.pdf; Enquiries should be addressed to IAEA, Marketing and Sales Unit, Publishing Section, E-mail: sales.publications@iaea.org; Web site: http://www.iaea.org/books; Paper first presented at the Technical Meeting of the UMREG in Bad Schlema, Germany, August-September 2015; 24 refs., 2 figs., 1 tab.


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AbstractAbstract
[en] Electron impact ionization cross sections σq,q+n for gallium ions have been measured for the reaction e + Gaq+ → Ga(q+n)+ + (n + 1)e for single (n = 1, q = 1, 3, 8) and triple (n = 3, q = 3, 4) ionization. The measurements have been performed using the crossed-beams technique in an energy range from the respective ionization threshold up to 1 keV, partly up to 6 keV. The cross sections for single ionization of ions in the charge state q = 1 and 3 show contributions below the ground state threshold caused by ionization of ions in excited, long-lived states in the parent ion beam. The cross sections are compared with the semiempirical Lotz formula. The cross section for Ga4+ triple ionization shows contributions from inner-shell processes. Semiempirical formulae are in good agreement with the experimental data only at energies below the cross section maximum. (orig.)
Primary Subject
Source
9. international conference on the physics of highly-charged ions (HCI-9); Bensheim (Germany); 9-14 Sep 1998; 12 refs.
Record Type
Journal Article
Literature Type
Conference
Journal
Physica Scripta. T; ISSN 0281-1847;
; v. 80(pt.B); p. 287-288

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AbstractAbstract
[en] Absolute cross sections σq,q+n for the multiple ionization of Cq+, Nq+ and Oq+ ions were measured for the reactions: e + Aq+ → A(q+n)+ + (n + 1)e. The measurements were performed for electron energies up to 6.5 keV using the animated crossed-beams method at the Giessen electron-ion crossed-beams set-up. K-shell ionization with subsequent autoionization or even double-autoionization strongly contributes to the cross sections. (orig.)
Primary Subject
Source
9. international conference on the physics of highly-charged ions (HCI-9); Bensheim (Germany); 9-14 Sep 1998; 10 refs.
Record Type
Journal Article
Literature Type
Conference
Journal
Physica Scripta. T; ISSN 0281-1847;
; v. 80(pt.B); p. 285-286

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AbstractAbstract
[en] Short communication
Original Title
Fragmentation von positiv geladenen Fulleren-Ionen durch Elektronenstoss
Primary Subject
Source
Spring meeting of Fachverbaende Atomphysik, Kurzzeitphysik, Massenspektrometrie, Molekuelphysik, Plasmaphysik and Quantenoptik of Deutsche Physikalische Gesellschaft e.V. (DPG) with physics and book exhibition; Fruehjahrstagung der Fachverbaende Atomphysik, Kurzzeitphysik, Massenspektrometrie, Molekuelphysik, Plasmaphysik und Quantenoptik der Deutschen Physikalischen Gesellschaft e.V. (DPG) mit Physik- und Buchausstellung; Mainz (Germany); 3-6 Mar 1997
Record Type
Journal Article
Literature Type
Conference
Journal
Verhandlungen der Deutschen Physikalischen Gesellschaft; ISSN 0420-0195;
; CODEN VDPEAZ; v. 32(3); p. 186

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