Short positron lifetime at vacancies observed in electron-irradiated tungsten: Experiments and first-principles calculations
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Nuclear Materials"
DOI: 10.1016/j.jnucmat.2020.152473
Abstract: Abstract A positron lifetime component of ∼ 170 ps has been reported for irradiated tungsten (W) in some studies. This value is considerably shorter than that calculated for isolated monovacancies ( ∼ 200 ps). In this study, positron annihilation lifetime… read more here.
Keywords: positron; electron irradiated; positron lifetime; lifetime ... See more keywords
Size effect in nonstoichiometric titanium monoxide and vanadium carbide nanocrystals measured by positron lifetime spectroscopy
Sign Up to like & getrecommendations! Published in 2019 at "Mendeleev Communications"
DOI: 10.1016/j.mencom.2019.09.002
Abstract: A size effect in nonstoichiometric titanium monoxide TiOy and vanadium carbide VCy nanocrystals containing high concentrations of structural vacancies was detected by electron-positron annihilation. The effect consists of a considerable increase in the positron lifetime… read more here.
Keywords: positron; positron lifetime; size effect; spectroscopy ... See more keywords