Vitreous Silica Distends in Helium Gas: Acoustic Versus Static Compressibilities - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2013

Vitreous Silica Distends in Helium Gas: Acoustic Versus Static Compressibilities

Mathieu Kint
Benoit Ruffle
  • Fonction : Auteur
  • PersonId : 875239
Marie Foret
  • Fonction : Auteur
  • PersonId : 875244
René Vacher
  • Fonction : Auteur
  • PersonId : 875238

Résumé

Sound velocities of vitreous silica are measured under He compression in the pressure range of 0-6 GPa by Brillouin light scattering. It is found that the well-known anomalous maximum in the pressure dependence of the compressibility is suppressed by He incorporation into the silica network. This shows that the elastic anomaly relates to the collapse of the largest interstitial voids in the structure. The huge difference between the static and the acoustic compressibilities indicates that the amount of incorporated helium still increases at 6 GPa.
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Dates et versions

hal-00814488 , version 1 (17-04-2013)

Identifiants

  • HAL Id : hal-00814488 , version 1

Citer

Coralie Weigel, Alain Polian, Mathieu Kint, Benoit Ruffle, Marie Foret, et al.. Vitreous Silica Distends in Helium Gas: Acoustic Versus Static Compressibilities. NCM12 (Non-Crystalline Materials 12), Jul 2013, Riva Del Garda, Italy. ⟨hal-00814488⟩
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