MCNPX simulation of influence of cosmic rays on low-activity spectrometric measurements

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F12%3A%230000784" target="_blank" >RIV/00177016:_____/12:#0000784 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00177016:_____/14:#0000866

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.radphyschem.2012.12.034" target="_blank" >http://dx.doi.org/10.1016/j.radphyschem.2012.12.034</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.radphyschem.2012.12.034" target="_blank" >10.1016/j.radphyschem.2012.12.034</a>

Jazyk výsledku

angličtina

Název v původním jazyce

MCNPX simulation of influence of cosmic rays on low-activity spectrometric measurements

Popis výsledku v původním jazyce

Germanium gamma spectrometers are effective instruments for low-activity measurement of a mixture of radionuclides in environmental samples, food samples, in materials released from nuclear facilities to the environment, etc. In such measurements cosmicrays have a signi?cant contribution to the background signal. A Monte Carlo code MCNPX was used to calculate coaxial high-purity germanium (HPGe) detector pulse-height spectra caused by cosmic rays penetrating through shielding made of concrete and lead.Simulations were compared to two different measurements, one performed inside a 10 cm thick lead shielding and another done inside a larger chamber made of low-activity concrete and with several ceiling thicknesses. In the ?rst experiment, a discrepancywas found between simulated and measured spectra by up to the factor of 4 at 2.62 MeV and slowly decreasing to unity at 13 MeV. It is assumed that the discrepancy between the measured and simulated spectra is caused by the simpli?cation

Název v anglickém jazyce

MCNPX simulation of influence of cosmic rays on low-activity spectrometric measurements

Popis výsledku anglicky

Germanium gamma spectrometers are effective instruments for low-activity measurement of a mixture of radionuclides in environmental samples, food samples, in materials released from nuclear facilities to the environment, etc. In such measurements cosmicrays have a signi?cant contribution to the background signal. A Monte Carlo code MCNPX was used to calculate coaxial high-purity germanium (HPGe) detector pulse-height spectra caused by cosmic rays penetrating through shielding made of concrete and lead.Simulations were compared to two different measurements, one performed inside a 10 cm thick lead shielding and another done inside a larger chamber made of low-activity concrete and with several ceiling thicknesses. In the ?rst experiment, a discrepancywas found between simulated and measured spectra by up to the factor of 4 at 2.62 MeV and slowly decreasing to unity at 13 MeV. It is assumed that the discrepancy between the measured and simulated spectra is caused by the simpli?cation

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

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Návaznosti

R - Projekt Ramcoveho programu EK

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Radiation Physics and Chemistry

ISSN

0969-806X

e-ISSN

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Svazek periodika

2014

Číslo periodika v rámci svazku

95

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

4

Strana od-do

181-184

Kód UT WoS článku

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EID výsledku v databázi Scopus

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