Characterization of helium implanted Fe-Cr alloys by means of positron annihilation methods

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10288538" target="_blank" >RIV/00216208:11320/14:10288538 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jnucmat.2013.10.039" target="_blank" >http://dx.doi.org/10.1016/j.jnucmat.2013.10.039</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jnucmat.2013.10.039" target="_blank" >10.1016/j.jnucmat.2013.10.039</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Characterization of helium implanted Fe-Cr alloys by means of positron annihilation methods

Popis výsledku v původním jazyce

Doppler broadening spectroscopy and positron lifetime measurements have been used for the characterization of radiation damage and helium effects on the microstructure of the ferritic Fe-Cr alloy with 12% (wt.) chromium content. Severe displacement damage (up to 100 dpa) was introduced by the implantation of helium ions with fluence 1.25 x 10(18) cm(-2). The temperature during the implantation process was below 80 degrees C. Positron lifetime spectra obtained from slow positron beam experiments confirmed the presence of large voids in the region of the displacement peak. Further investigation by Doppler broadening spectroscopy in the conventional and slow positron beam setups revealed a strong retention of helium in this region, which contributes to the broadening of the momentum peak and at the same time it reduces the positron lifetime in radiation-induced vacancy clusters. The measured Doppler broadened profiles of the implanted materials reasonably correspond with the calculated da

Název v anglickém jazyce

Characterization of helium implanted Fe-Cr alloys by means of positron annihilation methods

Popis výsledku anglicky

Doppler broadening spectroscopy and positron lifetime measurements have been used for the characterization of radiation damage and helium effects on the microstructure of the ferritic Fe-Cr alloy with 12% (wt.) chromium content. Severe displacement damage (up to 100 dpa) was introduced by the implantation of helium ions with fluence 1.25 x 10(18) cm(-2). The temperature during the implantation process was below 80 degrees C. Positron lifetime spectra obtained from slow positron beam experiments confirmed the presence of large voids in the region of the displacement peak. Further investigation by Doppler broadening spectroscopy in the conventional and slow positron beam setups revealed a strong retention of helium in this region, which contributes to the broadening of the momentum peak and at the same time it reduces the positron lifetime in radiation-induced vacancy clusters. The measured Doppler broadened profiles of the implanted materials reasonably correspond with the calculated da

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Journal of Nuclear Materials

ISSN

0022-3115

e-ISSN

—

Svazek periodika

450

Číslo periodika v rámci svazku

1-3

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

54-58

Kód UT WoS článku

000337862600009

EID výsledku v databázi Scopus

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