Activation Analysis of Tibetan Coins and Thermal Neutron Flux Measurement at the VR-1 Training Reactor

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F19%3A00320242" target="_blank" >RIV/68407700:21340/19:00320242 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.radphyschem.2018.06.032" target="_blank" >https://doi.org/10.1016/j.radphyschem.2018.06.032</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.radphyschem.2018.06.032" target="_blank" >10.1016/j.radphyschem.2018.06.032</a>

Result language

angličtina

Original language name

Activation Analysis of Tibetan Coins and Thermal Neutron Flux Measurement at the VR-1 Training Reactor

Original language description

The VR-1 training reactor of Czech Technical University in Prague serves mostly to train students; however, owing to the presence of the experimental channels, it can be utilized for particular research tasks such as irradiation experiments, neutron radiography, and neutron activation analysis (NAA). Within the presented experiments, eight samples of historical Tibetan coins were irradiated in the experimental channel at maximum power, and the amount of the copper, silver, gold, and zinc was investigated using the NAA. The irradiated samples were repeatedly measured by the calibrated semiconductor HPGe detector; saturated activities were obtained by means of the gamma-ray spectrometry, and subsequently the composition of the samples was determined. In investigated Tibetan coins, the determined concentration of silver ranged from 47.9% to 54.5%, concentration of copper ranged from 13.5% to 99.3%, concentration of zinc ranged from 0.6% to 4.0%, and abundance of gold was 0.03-0.2%. Moreover, the activation measurement of neutron field parameters using the dosimetry foils was performed, and the reaction rates in the vertical experimental channel were determined utilizing the bare and cadmium covered gold foils. Afterwards, the thermal neutron flux for the relevant position was extracted employing the Westcott formalism and activation cross-section from the ENDF/B-VII.1 database. The results presented in this paper show clearly that the low-power VR-1 training reactor (ca. 80 W) is suitable for the neutron activation analysis of historical samples containing the noble metals.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Project

<a href="/en/project/LM2015053" target="_blank" >LM2015053: VR-1 – Training Reactor for Research Activities</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2019

Confidentiality

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

Name of the periodical

Radiation Physics and Chemistry

ISSN

0969-806X

e-ISSN

1879-0895

Volume of the periodical

155

Issue of the periodical within the volume

Feb

Country of publishing house

GB - UNITED KINGDOM

Number of pages

6

Pages from-to

304-309

UT code for WoS article

000454467400056

EID of the result in the Scopus database

2-s2.0-85049060607