Precision half-life measurement of .sup.140 La with Ge-detector.
Result description
Half-life is one of the fundamental properties od radioactive nuclei, and the presision required for its numerous applications in modern physics sometimes approaches the level of 10.sup.-4 -10.sup.-5. Most part of the T.sub.1/2 measurements performed upto now was made with proportional chambers, and the results were sometimes hardly reproducible within the error limits. Using Ge-detectors for that purpose brought some significant advantages but electronic unit related effects and spectra analysis procedures still remain the sources of the errors influencing the accuracy of the T.sub.1/2 attained. In this work, .sup.140 La sampleswere obtained in the .sup.139 La(n,.tau.).sup.140 La reastion,employing a microtron as a neutron source and the half-life measurements were performed with a HPGe-detector. Influencing factors such a photopeak and background shape, electronic circuitry dead time and deadtime variations during the measurements, as well as pulse pileup are studied altogether. Val
Keywords
The result's identifiers
Result code in IS VaVaI
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Precision half-life measurement of .sup.140 La with Ge-detector.
Original language description
Half-life is one of the fundamental properties od radioactive nuclei, and the presision required for its numerous applications in modern physics sometimes approaches the level of 10.sup.-4 -10.sup.-5. Most part of the T.sub.1/2 measurements performed upto now was made with proportional chambers, and the results were sometimes hardly reproducible within the error limits. Using Ge-detectors for that purpose brought some significant advantages but electronic unit related effects and spectra analysis procedures still remain the sources of the errors influencing the accuracy of the T.sub.1/2 attained. In this work, .sup.140 La sampleswere obtained in the .sup.139 La(n,.tau.).sup.140 La reastion,employing a microtron as a neutron source and the half-life measurements were performed with a HPGe-detector. Influencing factors such a photopeak and background shape, electronic circuitry dead time and deadtime variations during the measurements, as well as pulse pileup are studied altogether. Val
Czech name
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Czech description
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Classification
Type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BG - Nuclear, atomic and molecular physics, accelerators
OECD FORD branch
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Result continuities
Project
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2002
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Nuclear Instruments and Methods in Physics Research. B
ISSN
0168-583X
e-ISSN
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Volume of the periodical
187
Issue of the periodical within the volume
N/A
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
8
Pages from-to
419-426
UT code for WoS article
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EID of the result in the Scopus database
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Basic information
Result type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP
BG - Nuclear, atomic and molecular physics, accelerators
Year of implementation
2002