Retrospective dose reconstruction for an incident involving a concealed radium needle

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652052%3A_____%2F18%3AN0000013" target="_blank" >RIV/86652052:_____/18:N0000013 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.radmeas.2018.09.003" target="_blank" >http://dx.doi.org/10.1016/j.radmeas.2018.09.003</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.radmeas.2018.09.003" target="_blank" >10.1016/j.radmeas.2018.09.003</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Retrospective dose reconstruction for an incident involving a concealed radium needle

Popis výsledku v původním jazyce

A historical radium (226Ra) needle was found in a building in Prague. The needle was concealed in a wall under a window frame. Ambient dose equivalent rate measured in close proximity of the frame reached up to 2 mSv/h. The place was situated between a corridor and a staircase where people normally did not stay so any significant radiation exposures were not suspected. Because of a remarkable history of the building, our speculation was that the needle could have been concealed there during World War II. In order to verify this assumption, one adjacent brick nearest to the place of the find was removed. The brick was used for retrospective dosimetry based on Optically Stimulated Luminescence (OSL) of quartz extracted from a chosen brick block. Dose rate values inside of the brick block were determined via a laboratory reconstruction. The original exposure conditions were simulated using the needle and a brick wall containing Thermoluminescence detectors (TLD). We also performed a computational simulation with a Monte Carlo technique. It provided us a more detailed dose rate distribution inside of the brick block. Finally, we compared OSL quartz, TLD and Monte Carlo results. A good agreement among the results supports the speculation that the radium needle was concealed during World War II.

Název v anglickém jazyce

Retrospective dose reconstruction for an incident involving a concealed radium needle

Popis výsledku anglicky

A historical radium (226Ra) needle was found in a building in Prague. The needle was concealed in a wall under a window frame. Ambient dose equivalent rate measured in close proximity of the frame reached up to 2 mSv/h. The place was situated between a corridor and a staircase where people normally did not stay so any significant radiation exposures were not suspected. Because of a remarkable history of the building, our speculation was that the needle could have been concealed there during World War II. In order to verify this assumption, one adjacent brick nearest to the place of the find was removed. The brick was used for retrospective dosimetry based on Optically Stimulated Luminescence (OSL) of quartz extracted from a chosen brick block. Dose rate values inside of the brick block were determined via a laboratory reconstruction. The original exposure conditions were simulated using the needle and a brick wall containing Thermoluminescence detectors (TLD). We also performed a computational simulation with a Monte Carlo technique. It provided us a more detailed dose rate distribution inside of the brick block. Finally, we compared OSL quartz, TLD and Monte Carlo results. A good agreement among the results supports the speculation that the radium needle was concealed during World War II.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20601 - Medical engineering

Projekt

<a href="/cs/project/VI20152020033" target="_blank" >VI20152020033: Metodiky pro stanovení radiačních dávek osob v kontextu hrozby jaderného a radiologického terorismu</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Radiation Measurements

ISSN

1350-4487

e-ISSN

—

Svazek periodika

119

Číslo periodika v rámci svazku

December

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

27-32

Kód UT WoS článku

000453491700006

EID výsledku v databázi Scopus

2-s2.0-85052966817