Journal of Radioanalytical and Nuclear Chemistry
Volume/Issue:
Volume 190: Issue 2
Spin conversion of positronium in paramagnetic solutions studied by age-momentum-correlation method
Authors:
J. Major Max-Planck-Institut für Metallforschung Institut für Physik Heisenbergstr. 1 D-70569 Stuttgart Germany

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H. Schneider Max-Planck-Institut für Metallforschung Institut für Physik Heisenbergstr. 1 D-70569 Stuttgart Germany

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A. Seeger Universität Stuttgart Institut für Theoretische und Angewandte Physik D-70569 Stuttgart Germany

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A. Siegle Universität Stuttgart Institut für Theoretische und Angewandte Physik D-70569 Stuttgart Germany

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H. Stoll Max-Planck-Institut für Metallforschung Institut für Physik Heisenbergstr. 1 D-70569 Stuttgart Germany

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I. Billard Centre de Recherches Nucléaires Laboratoire de Chimie Nucléaire PB 20 F-67037 Strasbourg Cédex France

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M. Koch Max-Planck-Institut für Metallforschung Institut für Physik Heisenbergstr. 1 D-70569 Stuttgart Germany

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U. Lauff Max-Planck-Institut für Metallforschung Institut für Physik Heisenbergstr. 1 D-70569 Stuttgart Germany

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Pages:
481–491
Online Publication Date:
14 Aug 2005
Publication Date:
17 Mar 1995
Article Category:
Research Article
DOI:
https://doi.org/10.1007/bf02040030
Restricted access

Abstract  

Correlated measurement of the lifetime and of the lineshape of the 511 keV annihilation radiation of positrons (age-momentum correlation, AMOC) has become a powerful tool for investigating reactions of positron or positronium in condensed matter as a function of time. The beam-based+ AMOC method installed at the Stuttgart relativistic positron beam facility (Ekine+4MeV) offers substantial advantages over the conventional E coincidence technique resulting in a fast data taking due to the unity detection efficiency of the+ scintillator which provides the start signal for the lifetime measurement. In this paper the application of AMOC to positronium chemistry is illustrated by the study of spin conversion of positronium in the system methanol/HTEMPO as a function of HTEMPO (4-hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl, a paramagnetic solute) concentration. The same technique can be applied to other systems and other reactions in positronium chemistry, e. g., oxidation or complex formation.

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Cover Journal of Radioanalytical and Nuclear Chemistry
Journal of Radioanalytical and Nuclear Chemistry
Print ISSN:
0236-5731
Online ISSN:
1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation		 1968
Volumes
per Year		 1
Issues
per Year		 12
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)

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