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No abstract available
Journal
Verhandlungen der Deutschen Physikalischen Gesellschaft; ISSN 0420-0195; 
; v. 16(6); p. 729
; v. 16(6); p. 729
No abstract available
Source
Anon; 685 p; ISBN 2-7272-0065-X; ; 1981; p. 83; Commissariat a l'Energie Atomique; Paris, France; 9. International conference on high energy physics and nuclear structure; Versailles, France; 6 - 10 Jul 1981; Available from Laboratoire National Saturne, CEN Saclay, 91191 Gif-sur-Yvette Cedex (France); Published in summary form only.
; 1981; p. 83; Commissariat a l'Energie Atomique; Paris, France; 9. International conference on high energy physics and nuclear structure; Versailles, France; 6 - 10 Jul 1981; Available from Laboratoire National Saturne, CEN Saclay, 91191 Gif-sur-Yvette Cedex (France); Published in summary form only.
[en] A non-destructive multi-element method based on nuclear reactions and Coulomb excitation induced by alpha-sources and the measurement of prompt gamma-rays is described. The method is suitable for light and medium Z elements and is particularly sensitive to light elements. The experimental set-up necessary for the prompt measurements is quite simple. With 0.34 mCi 241Am source, the sensitivity of the method is discussed for the light elements Li, Be, F and Na. The influence of sample size, air pressure etc. on the thick target yield has been investigated. Monte-Carlo calculations have been performed to study the modification of the isotropic behaviour of the alpha-source due to the protective covering and to calculate the average energy loss. The lithium determination in some minerals has been carried out. (orig.)
[de]
Eine zerstoerungsfreie Multielementmethode, die auf Kernreaktionen und Coulombanregung induziert durch α-Quellen beruht, sowie die Messung prompter γ-Strahlung werden beschrieben. Die Methode eignet sich fuer leichte und mittelschwere Elemente und ist besonders empfindlich bei leichten Elementen. Der fuer Promptmessungen notwendige experimentelle Aufbau ist recht einfach. Die Empfindlichkeit der Methode bei Benutzung eines 0,34 mCi starken 241Am-Praeparats wird fuer die leichten Elemente Li, Be, F und Na diskutiert. Der Einfluss von Probengroesse, Luftdruck usw. auf die Ausbeute eines dicken Targets wurde untersucht. Monte-Carlo-Rechnungen wurden ausgefuehrt, um die Modifizierung der isotropen Abstrahlung der Quelle durch deren Schutzabdeckung zu studieren und um den mittleren Energieverlust zu erhalten. Eine Li-Bestimmung in einigen Mineralen wurde durchgefuehrt. (orig.)Journal
Fresenius' Zeitschrift fuer Analytische Chemie; ISSN 0016-1152; ; CODEN FZACB; v. 321(8); p. 739-747
; CODEN FZACB; v. 321(8); p. 739-747
No abstract available
Source
Zeitnitz, B. (Karlsruhe Univ. (T.H.) (Germany, F.R.); Kernforschungszentrum Karlsruhe G.m.b.H. (Germany, F.R.)); 799 p; ISBN 0 444 86902 6; ; 1984; p. 299-302; North-Holland; Amsterdam (Netherlands); 10. international conference on few-body problems in physics; Karlsruhe (Germany, F.R.); 21-27 Aug 1983; Published in summary form only.
; 1984; p. 299-302; North-Holland; Amsterdam (Netherlands); 10. international conference on few-body problems in physics; Karlsruhe (Germany, F.R.); 21-27 Aug 1983; Published in summary form only.
[en] A scintillation drift chamber operated with a gas mixture of 90% Ar+10% N2 in the range of pressure between 50 and 150 torr is described. The position where a heavy ion transverses the chamber is determined in one dimension from the drift time of ionization electrons measured as the time delay between primary and secondary scintillation flashes; the other dimension is derived by charge-division techniques from the charge of the electron swarm arriving at the end of the drift space. ΔE signals for particle identification were derived from both the collected charge and the total light amplitude. With 136Xe and 238U ions of 1.4 MeV/amu, position resolution, pulse height and pulse-height resolution were studied systematically. Best resolutions obtained were 0.5 mm and 0.3 mm, respectively, for the two dimensions and 4.7% for ΔE. (Auth.)
Journal
Nuclear Instruments and Methods; ISSN 0029-554X; ; v. 154(2); p. 245-252
; v. 154(2); p. 245-252
No abstract available
Journal
Verhandlungen der Deutschen Physikalischen Gesellschaft; ISSN 0420-0195; ; v. 17(6); p. 1187
; v. 17(6); p. 1187
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