Investigation of the formation of defects under fast neutrons and gamma irradiation in 3C?SiC nano powder

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F21%3A00354967" target="_blank" >RIV/68407700:21670/21:00354967 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.physb.2021.412842" target="_blank" >https://doi.org/10.1016/j.physb.2021.412842</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physb.2021.412842" target="_blank" >10.1016/j.physb.2021.412842</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Investigation of the formation of defects under fast neutrons and gamma irradiation in 3C?SiC nano powder

Popis výsledku v původním jazyce

In this work cubic phase, silicon carbide nano-powders were irradiated at the high-flux pulsed reactor IBR?2 (Dubna, Russia). The 3C?SiC powder was irradiated with neutron doses up to 1015 n/cm2. The irradiated samples were then analyzed using X-ray diffraction, Raman spectroscopy, Positron annihilation spectroscopy, and Fourier Transform Infrared Spectroscopy. The XRD analysis showed a slight decrease in the lattice parameters with the increase in neutron fluences. The results obtained from positron annihilation measurements were compared to the theoretical calculations, to recognizing the type of structural defect in the samples. A positron lifetime component 355 ps associated with the calculated values for clusters containing of 13?21 vacancies was identified. The concentration of these defects was estimated to be in the region of 5 ppm, and was very similar to the one identified on the unirradiated sample. The results also indicate high irradiation resistivity of the 3C?SiC after irradiation.

Název v anglickém jazyce

Investigation of the formation of defects under fast neutrons and gamma irradiation in 3C?SiC nano powder

Popis výsledku anglicky

In this work cubic phase, silicon carbide nano-powders were irradiated at the high-flux pulsed reactor IBR?2 (Dubna, Russia). The 3C?SiC powder was irradiated with neutron doses up to 1015 n/cm2. The irradiated samples were then analyzed using X-ray diffraction, Raman spectroscopy, Positron annihilation spectroscopy, and Fourier Transform Infrared Spectroscopy. The XRD analysis showed a slight decrease in the lattice parameters with the increase in neutron fluences. The results obtained from positron annihilation measurements were compared to the theoretical calculations, to recognizing the type of structural defect in the samples. A positron lifetime component 355 ps associated with the calculated values for clusters containing of 13?21 vacancies was identified. The concentration of these defects was estimated to be in the region of 5 ppm, and was very similar to the one identified on the unirradiated sample. The results also indicate high irradiation resistivity of the 3C?SiC after irradiation.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

PHYSICA B-CONDENSED MATTER

ISSN

0921-4526

e-ISSN

1873-2135

Svazek periodika

611

Číslo periodika v rámci svazku

412842

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

—

Kód UT WoS článku

000643642400005

EID výsledku v databázi Scopus

2-s2.0-85102570521