Three-Dimensional Polymer Gel Dosimetry: Basic Physical Properties of the Dosimeter

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F01%3A04068253" target="_blank" >RIV/68407700:21220/01:04068253 - 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

Three-Dimensional Polymer Gel Dosimetry: Basic Physical Properties of the Dosimeter

Popis výsledku v původním jazyce

This study was concentrated on the assessment of the basic physical properties of polymer gel dosimeter evaluated by NMR. BANG-2 type polymer gel was prepared. The dosimeters were irradiated by 60Co gamma photons and by 4 MV, 6 MV and 18 MV X ray photonsby doses in the range of 0-50 Gy. Multi-echo CPMG sequence was used for the evaluation of T2-relaxation times in irradiated gel dosimeters. The dependence of 1/T2 response of dosimeters was studied on following factors: absorbed dose, energy of applied radiation, temperature during NMR evaluation, time since irradiation to NMR evaluation and strength of the magnetic field. An exponential dependence of 1/T2 response on absorbed dose in the range of 0-50 Gy was observed, in the range 0-10 Gy the data could be fitted by linear function. There was described the dependence of 1/T2 response on: energy, strength of magnetic field and time from irradiation of the dosimeters to NMR evaluation. Increase of gel dosimeter 1/T2 response with the d.

Název v anglickém jazyce

Three-Dimensional Polymer Gel Dosimetry: Basic Physical Properties of the Dosimeter

Popis výsledku anglicky

This study was concentrated on the assessment of the basic physical properties of polymer gel dosimeter evaluated by NMR. BANG-2 type polymer gel was prepared. The dosimeters were irradiated by 60Co gamma photons and by 4 MV, 6 MV and 18 MV X ray photonsby doses in the range of 0-50 Gy. Multi-echo CPMG sequence was used for the evaluation of T2-relaxation times in irradiated gel dosimeters. The dependence of 1/T2 response of dosimeters was studied on following factors: absorbed dose, energy of applied radiation, temperature during NMR evaluation, time since irradiation to NMR evaluation and strength of the magnetic field. An exponential dependence of 1/T2 response on absorbed dose in the range of 0-50 Gy was observed, in the range 0-10 Gy the data could be fitted by linear function. There was described the dependence of 1/T2 response on: energy, strength of magnetic field and time from irradiation of the dosimeters to NMR evaluation. Increase of gel dosimeter 1/T2 response with the d.

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

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2001

Kód důvěrnosti údajů

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

Název periodika

Radiation Phys. Chem

ISSN

0969-806X

e-ISSN

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Svazek periodika

61

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

4

Strana od-do

255-258

Kód UT WoS článku

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EID výsledku v databázi Scopus

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