G. P. Karwasza
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Relative abundances of positively ionized water clusters formed in a low-pressure electrical discharge as function of reduced electric field were obtained by using drift cell and quadrupole mass… (More)
Positron annihilation techniques, being non-destructive, allowing depth profiling down to a few micrometers and detecting open-volume defects (vacancies, dislocations etc.) at single ppm… (More)
Grazing incidence X-rays diffraction (GI-XRD), X-rays reflectivity (XRR) and positron annihilation spectroscopy (PAS) analysis on Pd– Mg thin bilayer films deposited by electron-gun on Si wafer and… (More)
A very low-energy positron spectrometer for scattering measurements in gases is presented. The apparatus uses electrostatic optics, two stages of positron moderation, magnetic focusing in the… (More)
Silicon precipitates have been obtained in layers of Si-rich SiO2 by ion implantation and thermal treatments. Positron annihilation spectroscopy (PAS) has been used to investigate on open volume… (More)