Journal of Radioanalytical and Nuclear Chemistry
Volume/Issue:
Volume 190: Issue 2
Long-living positron and positronium states in zeolites and microcrystalline oxides
Authors:
Zs. Kajcsos KFKI Research Institute for Particle and Nuclear Physics of H.A.S. POB. 49 H-1525 Budapest Hungary

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L. Liszkay KFKI Research Institute for Particle and Nuclear Physics of H.A.S. POB. 49 H-1525 Budapest Hungary

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L. Varga KFKI Research Institute for Particle and Nuclear Physics of H.A.S. POB. 49 H-1525 Budapest Hungary

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K. Lázár Institute of Isotopes of the Hungarian Academy of Sciences POB. 77 H-1525 Budapest Hungary

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L. Lohonyai KFKI Research Institute for Particle and Nuclear Physics of H.A.S. POB. 49 H-1525 Budapest Hungary

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Pages:
475–480
Online Publication Date:
14 Aug 2005
Publication Date:
17 Mar 1995
Article Category:
Research Article
DOI:
https://doi.org/10.1007/bf02040029
Restricted access

Abstract  

Positron annihilation (PA) investigations were performed on zeolites (X, Y and ZSM-5) and on microcrystalline MgO, Al2O3 and SiO2, providing long lifetime components attributed to o-Ps atoms. In addition to the positron lifetime (LT) measurement, the energy distribution (ED) of the annihilation gamma radiation spectrum was recorded in the 30 keV–1.5 MeV range for different samples and was compared to reference distributions for Si and GaAs samples, where no long-living Ps states are formed. Apart from the strong correlation with the water content in the samples, the positron data collected testify much more pronounced positronium hosting features for powders of the mentioned oxides than for zeolites. Positron LT spectroscopy combined with recording of the ED of the annihilation radiation provides reliable information on the formation of long living 3 states.

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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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