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

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BG - Jaderná, atomová a molekulová fyzika, urychlovače

OECD FORD obor

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Projekt

<a href="/cs/project/KSK1048102" target="_blank" >KSK1048102: Základní fyzikální zákony mikrosvěta a makrosvěta, chování hmoty a záření</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2002

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Nuclear Instruments and Methods in Physics Research. B

ISSN

0168-583X

e-ISSN

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Svazek periodika

187

Číslo periodika v rámci svazku

N/A

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

419-426

Kód UT WoS článku

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EID výsledku v databázi Scopus

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