A new electrostatic positron beam for surface studies
A Zecca, M Bettonte, J Paridaens… - Measurement …, 1998 - iopscience.iop.org
A new electrostatic positron beam has been constructed and tested. The energy range
spans more than three decades, from less than 50 eV to more than 50 keV. The machine …
spans more than three decades, from less than 50 eV to more than 50 keV. The machine …
Vacancy-hydrogen interaction in H-implanted Si studied by positron annihilation
RS Brusa, MD Naia, A Zecca, C Nobili, G Ottaviani… - Physical Review B, 1994 - APS
The density of vacancylike defects, produced in silicon by hydrogen implantation at 15.5 keV
and surviving to successive isochronal annealings, has been measured by means of a slow …
and surviving to successive isochronal annealings, has been measured by means of a slow …
Positron mobility in polyethylene in the 60–400 K temperature range
RS Brusa, MD Naia, D Margoni, A Zecca - Applied Physics A, 1995 - Springer
We have determined the positron mobility (μ+) in polyethylene samples (67.2% crystalline,
glass transition temperature T g= 151 K) in the 64–400 K temperature range by Doppler shift …
glass transition temperature T g= 151 K) in the 64–400 K temperature range by Doppler shift …
Defect profiling by positron beams and other techniques
A Dupasquier, G Ottaviani - Positron Spectroscopy of Solids, 1995 - ebooks.iospress.nl
Many technological processes for the production of advanced materials and devices are
liable to create a population of lattice defects concentrated within a few micrometres from the …
liable to create a population of lattice defects concentrated within a few micrometres from the …
Calibration of a 2D-CDB spectrometer using a reference 133Ba source
A procedure for calibrating a FAST-ComTec 2D-CDB spectrometer using a 133Ba source is
presented. The energy calibration consisted of acquiring two-dimensional (2D) spectra by …
presented. The energy calibration consisted of acquiring two-dimensional (2D) spectra by …
[CYTOWANIE][C] Mobility of positrons in gamma-irradiated polypropylene and polyethylene
W Zheng, Y Kobayashi, K Hirata, T Suzuki - Radiation Physics and …, 1998 - Elsevier
Positron mobilities in polypropylene (PP) and polyethylene (PE) were determined by
observing the Doppler shift of the positron annihilation g-line as a function of an external …
observing the Doppler shift of the positron annihilation g-line as a function of an external …