Precision half-life measurement of .sup.140 La with Ge-detector.

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F02%3A49020023" target="_blank" >RIV/61389005:_____/02:49020023 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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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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Type
J<sub>x</sub> - 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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Project
<a href="/en/project/KSK1048102" target="_blank" >KSK1048102: Fundamental physical laws of microworld and macroworld, the behaviour of matter and radiation</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2002
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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