Mariazzi, S.; Dinoto, L.; Ravelli, Luca; Egger, Werner; Brusa, R. S.
Dokumenttyp:
Zeitschriftenartikel / Journal Article
Titel:
Study of Positronium formation in nano-channelled silicon as a function of sample temperature
Zeitschrift:
Journal of Physics. Conference Series (JPCS)
Jahrgang:
443
Heftnummer:
1
Jahr:
2013
Sprache:
Englisch
Abstract:
Oxidized nanochannel in silicon have been demonstrated to be suitable for positronium (Ps) formation and cooling also at low sample temperature. To investigate the Ps yield and to clarify the Ps formation mechanism we studied, by Positron Annihilation Spectroscopy (PAS), nanochanneled Si p-type samples in the 150-430 K temperature range. Ps yield was found to be constant in the 150-300 K temperature range, then it increases up to ∼50