An analytical X-ray CdTe detector response matrix for incomplete charge collection correction for energies up to 300 keV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652052%3A_____%2F18%3AN0000041" target="_blank" >RIV/86652052:_____/18:N0000041 - isvavai.cz</a>

Výsledek na webu

<a href="https://csoz.suro.cz/publikace/dro/dro-2018-mikulov/view" target="_blank" >https://csoz.suro.cz/publikace/dro/dro-2018-mikulov/view</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

An analytical X-ray CdTe detector response matrix for incomplete charge collection correction for energies up to 300 keV

Popis výsledku v původním jazyce

The gamma and X-ray energy spectra measured with semiconductor detectors suffer from the distortion due to the incomplete charge collection. The correction matrix was constructed for an arbitrary energy bin that defines thus the width of the spectral window. The correction was tested and its adjustable parameters were optimized on the line spectra of 57Co measured in a spectral range from 0 up to 160 keV and of 152Eu in a spectral range from 0 up to 530 keV. The best results were obtained when the values of the free path of holes were spread over a range from 0.4 cm to 1.0 cm and weighted by a Gauss function. The model was then used to correct experimentally measured X-ray spectra of „narrow spectrum series“ beams, N120, N150, N200, N250 and N300 generated with the tube voltages 120 kV, 150 kV, 200kV, 250kV and 300kV respectively, measured with the cadmium telluride (CdTe) detector. For obtaining better correspondence of N150, N200, N250 and N300 spectra with reference data, lower values of free paths of holes were used for X-ray spectra correction what suggests energy dependence of the phenomenon. Presented at XL. Dny radiační ochrany: sborník abstraktů. Praha: České vysoké učení technické v Praze, 2018. ISBN 978-80-01-06503-7.

Název v anglickém jazyce

An analytical X-ray CdTe detector response matrix for incomplete charge collection correction for energies up to 300 keV

Popis výsledku anglicky

The gamma and X-ray energy spectra measured with semiconductor detectors suffer from the distortion due to the incomplete charge collection. The correction matrix was constructed for an arbitrary energy bin that defines thus the width of the spectral window. The correction was tested and its adjustable parameters were optimized on the line spectra of 57Co measured in a spectral range from 0 up to 160 keV and of 152Eu in a spectral range from 0 up to 530 keV. The best results were obtained when the values of the free path of holes were spread over a range from 0.4 cm to 1.0 cm and weighted by a Gauss function. The model was then used to correct experimentally measured X-ray spectra of „narrow spectrum series“ beams, N120, N150, N200, N250 and N300 generated with the tube voltages 120 kV, 150 kV, 200kV, 250kV and 300kV respectively, measured with the cadmium telluride (CdTe) detector. For obtaining better correspondence of N150, N200, N250 and N300 spectra with reference data, lower values of free paths of holes were used for X-ray spectra correction what suggests energy dependence of the phenomenon. Presented at XL. Dny radiační ochrany: sborník abstraktů. Praha: České vysoké učení technické v Praze, 2018. ISBN 978-80-01-06503-7.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10304 - Nuclear physics

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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