Application of ?wet? extrapolation method for activity standardisation of electron capture radionuclides

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F08%3A%230000291" target="_blank" >RIV/00177016:_____/08:#0000291 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Application of ?wet? extrapolation method for activity standardisation of electron capture radionuclides

Popis výsledku v původním jazyce

The activity of electron capture radionuclides is usually determined by 4pi(PC)-gamma coincidence counting. The corrections necessary for the final activity value calculation are obtained by an extrapolation method. Variation of the proportional counter(PC) detection efficiency can be achieved through different methods, e.g. by changing the self-absorption of the source using absorbing foils or by adding carrier. Another possibility is a ?wet? extrapolation method, which utilises an absorption change during the drying of a water droplet added onto the source surface. In this paper, slopes of extrapolation curves and resulting activity values obtained by different methods are compared for several radionuclides (54Mn, 139Ce, 88Y, 57Co). In some cases adigital coincidence system was used for the analysis of measured data. The ?wet? extrapolation, due to its very simple procedure, seems to be convenient for routine measurement and its accuracy is similar to the other methods.

Název v anglickém jazyce

Application of ?wet? extrapolation method for activity standardisation of electron capture radionuclides

Popis výsledku anglicky

The activity of electron capture radionuclides is usually determined by 4pi(PC)-gamma coincidence counting. The corrections necessary for the final activity value calculation are obtained by an extrapolation method. Variation of the proportional counter(PC) detection efficiency can be achieved through different methods, e.g. by changing the self-absorption of the source using absorbing foils or by adding carrier. Another possibility is a ?wet? extrapolation method, which utilises an absorption change during the drying of a water droplet added onto the source surface. In this paper, slopes of extrapolation curves and resulting activity values obtained by different methods are compared for several radionuclides (54Mn, 139Ce, 88Y, 57Co). In some cases adigital coincidence system was used for the analysis of measured data. The ?wet? extrapolation, due to its very simple procedure, seems to be convenient for routine measurement and its accuracy is similar to the other methods.

Druh

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

CEP obor

BG - Jaderná, atomová a molekulová fyzika, urychlovače

OECD FORD obor

—

Projekt

—

Návaznosti

R - Projekt Ramcoveho programu EK

Rok uplatnění

2008

Kód důvěrnosti údajů

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

Název periodika

Applied Radiation and Isotopes

ISSN

0969-8043

e-ISSN

—

Svazek periodika

66

Číslo periodika v rámci svazku

6-7

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

—

Kód UT WoS článku

—

EID výsledku v databázi Scopus

—