Zanatta, M.; Baldi, G.; Brusa, R. S.; Egger, Werner; Fontana, A.; Gilioli, E.; Mariazzi, S.; Monaco, G.; Ravelli, Luca; Sacchetti, F.
Dokumenttyp:
Zeitschriftenartikel / Journal Article
Titel:
Structural evolution and medium range order in permanently densified vitreous SiO2
Zeitschrift:
Physical Review Letters
Jahrgang:
112
Heftnummer:
4
Jahr:
2014
Sprache:
Englisch
Abstract:
Positron annihilation lifetime spectroscopy is employed to measure the size of the interstitial void spaces characterizing the structure of a set of permanently densified SiO2 glasses. The average volume of the voids is markedly affected by the densification process and linearly shrinks by almost an order of magnitude after a relative density variation of 22